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<!--Copyright (C) 2002-2006 Unimod; this information may be copied, distributed and/or-->
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<!--accompanying Design Science License for more details-->
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      <umod:elem title="2H" full_name="Deuterium" avge_mass="2.014101779"
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      <umod:elem title="Li" full_name="Lithium" avge_mass="6.941" mono_mass="7.016003"/>
      <umod:elem title="C" full_name="Carbon" avge_mass="12.0107" mono_mass="12"/>
      <umod:elem title="13C" full_name="Carbon13" avge_mass="13.00335483"
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      <umod:elem title="N" full_name="Nitrogen" avge_mass="14.0067" mono_mass="14.003074"/>
      <umod:elem title="15N" full_name="Nitrogen15" avge_mass="15.00010897"
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      <umod:elem title="O" full_name="Oxygen" avge_mass="15.9994" mono_mass="15.99491463"/>
      <umod:elem title="18O" full_name="Oxygen18" avge_mass="17.9991603" mono_mass="17.9991603"/>
      <umod:elem title="F" full_name="Fluorine" avge_mass="18.9984032" mono_mass="18.99840322"/>
      <umod:elem title="Na" full_name="Sodium" avge_mass="22.98977" mono_mass="22.9897677"/>
      <umod:elem title="P" full_name="Phosphorous" avge_mass="30.973761" mono_mass="30.973762"/>
      <umod:elem title="S" full_name="Sulfur" avge_mass="32.065" mono_mass="31.9720707"/>
      <umod:elem title="Cl" full_name="Chlorine" avge_mass="35.453" mono_mass="34.96885272"/>
      <umod:elem title="K" full_name="Potassium" avge_mass="39.0983" mono_mass="38.9637074"/>
      <umod:elem title="Ca" full_name="Calcium" avge_mass="40.078" mono_mass="39.9625906"/>
      <umod:elem title="Fe" full_name="Iron" avge_mass="55.845" mono_mass="55.9349393"/>
      <umod:elem title="Ni" full_name="Nickel" avge_mass="58.6934" mono_mass="57.9353462"/>
      <umod:elem title="Zn" full_name="Zinc" avge_mass="65.409" mono_mass="63.9291448"/>
      <umod:elem title="Se" full_name="Selenium" avge_mass="78.96" mono_mass="79.9165196"/>
      <umod:elem title="Br" full_name="Bromine" avge_mass="79.904" mono_mass="78.9183361"/>
      <umod:elem title="Ag" full_name="Silver" avge_mass="107.8682" mono_mass="106.905092"/>
      <umod:elem title="Hg" full_name="Mercury" avge_mass="200.59" mono_mass="201.970617"/>
      <umod:elem title="Au" full_name="Gold" avge_mass="196.96655" mono_mass="196.966543"/>
      <umod:elem title="I" full_name="Iodine" avge_mass="126.90447" mono_mass="126.904473"/>
      <umod:elem title="Mo" full_name="Molybdenum" avge_mass="95.94" mono_mass="97.9054073"/>
      <umod:elem title="Cu" full_name="Copper" avge_mass="63.546" mono_mass="62.9295989"/>
      <umod:elem title="e" full_name="electron" avge_mass="0.000549" mono_mass="0.000549"/>
      <umod:elem title="B" full_name="Boron" avge_mass="10.811" mono_mass="11.0093055"/>
   </umod:elements>
   <umod:modifications>
      <umod:mod title="Acetyl" full_name="Acetylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="1"
                record_id="1">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Multiple"
                           spec_group="2">
            <umod:misc_notes>GIST acetyl light</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Multiple"
                           spec_group="1">
            <umod:misc_notes>PT and GIST acetyl light</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="7">
            <umod:misc_notes>O-acetyl</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="8"/>
         <umod:delta mono_mass="42.010565" avge_mass="42.0367" composition="H(2) C(2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>14730666</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15350136</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0055</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource acetylation tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/acetylation/acetylation.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Chemical Reagents for Protein Modification 3rd edition, pp 215-221, Roger L. Lundblad, CRC Press, New York, N.Y., 2005</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0043</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0044</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0354</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0045</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0056</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0046</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0051</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0052</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0364</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0041</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0049</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0048</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0047</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0042</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0050</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0053</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0054</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ACET</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PNAS 2006 103: 18574-18579</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1073/pnas.0608995103</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Amidated" full_name="Amidation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-14 08:10:18"
                approved="1"
                record_id="2">
         <umod:specificity hidden="0" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="-0.984016" avge_mass="-0.9848" composition="H N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0100</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0099</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0098</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0097</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0096</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0095</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0094</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0093</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0092</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0091</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0090</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0089</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0081</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0082</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0083</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0084</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0085</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0086</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0087</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0088</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AMID</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin" full_name="Biotinylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:27:08"
                approved="1"
                record_id="3">
         <umod:specificity hidden="0" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="226.077598" avge_mass="226.2954"
                     composition="H(14) C(10) N(2) O(2) S">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0117</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BIOT</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carbamidomethyl" full_name="Iodoacetamide derivative"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 10:18:27"
                approved="1"
                record_id="4">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="6"/>
         <umod:delta mono_mass="57.021464" avge_mass="57.0513" composition="H(3) C(2) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Carboxyamidomethylation</umod:alt_name>
         <umod:xref>
            <umod:text>Creasy, D. M., Cottrell, J. S., Proteomics 2 1426-34 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11510821</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Boja, E. S., Fales, H. M., Anal. Chem. 73 3576-82 (2001)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12422359</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carbamyl" full_name="Carbamylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:09:40"
                approved="0"
                record_id="5">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Multiple"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:delta mono_mass="43.005814" avge_mass="43.0247" composition="H C N O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0343</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12203680</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0332</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource carbamylation tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/carbam/carbam.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>10978403</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Carbamylation is an irreversible process of non-enzymatic modification of proteins by the breakdown products of urea isocyanic acid reacts with the N-term of a proteine or side chains of lysine and arginine residues</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Carboxymethyl" full_name="Iodoacetic acid derivative"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 10:21:50"
                approved="1"
                record_id="6">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="4">
            <umod:misc_notes>Hydroxylethanone</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="58.005479" avge_mass="58.0361" composition="H(2) C(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Carboxymethylation</umod:alt_name>
      </umod:mod>
      <umod:mod title="Deamidated" full_name="Deamidation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:11:50"
                approved="0"
                record_id="7">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>Protein which is post-translationally modified by the de-imination of one or more arginine residues; Peptidylarginine deiminase (PAD) converts protein bound to citrulline</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>Convertion of glycosylated asparagine residues upon deglycosylation with PGNase F in H2O</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Q" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="F" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="3"/>
         <umod:delta mono_mass="0.984016" avge_mass="0.9848" composition="H(-1) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>phenyllactyl from N-term Phe</umod:alt_name>
         <umod:alt_name>Citrullination</umod:alt_name>
         <umod:xref>
            <umod:text>IonSource tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/Deamidation/deamidation.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>CITR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FLAC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0128</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0214</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>6838602</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15700232</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DEAM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-G" full_name="Gygi ICAT(TM) d0" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:00:43"
                approved="1"
                record_id="8">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="486.251206" avge_mass="486.6253"
                     composition="H(38) C(22) N(4) O(6) S">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10504701</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gygi S.P., et. al. Nat Biotechnol. 1999 Oct;17(10):994-9</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-G:2H(8)" full_name="Gygi ICAT(TM) d8" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:01:35"
                approved="1"
                record_id="9">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="494.301420" avge_mass="494.6746"
                     composition="H(30) 2H(8) C(22) N(4) O(6) S">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10504701</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gygi S.P., et. al. Nat Biotechnol. 1999 Oct;17(10):994-9</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Met-&gt;Hse" full_name="Homoserine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-13 15:40:08"
                approved="1"
                record_id="10">
         <umod:specificity hidden="0" site="M" position="Any C-term" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.992806" avge_mass="-30.0922" composition="H(-2) C(-1) O S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:misc_notes>Cyanogen bromide (CNBr) cleavage converts the C-term Met to either homoserine or homoserine lactone, depending on pH.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Met-&gt;Hsl" full_name="Homoserine lactone" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:10:15"
                approved="0"
                record_id="11">
         <umod:specificity hidden="0" site="M" position="Any C-term" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-48.003371" avge_mass="-48.1075" composition="H(-4) C(-1) S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Donald Voet, Judith G. Voet (1995): Biochemistry; p 115</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cyanogen bromide (CNBr) cleavage converts the C-term Met to either homoserine or homoserine lactone, depending on pH.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ICAT-D:2H(8)" full_name="Applied Biosystems original ICAT(TM) d8"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:56:23"
                approved="1"
                record_id="12">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="450.275205" avge_mass="450.6221"
                     composition="H(26) 2H(8) C(20) N(4) O(5) S">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:Ignore mono_mass="227.085423" avge_mass="227.3033"
                      composition="H(15) C(10) N(2) O(2) S ">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="288.16838" avge_mass="288.4223"
                      composition="H(18) 2H(4) C(13) N(3) O(2) S ">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="332.194594" avge_mass="332.4749"
                      composition="H(22) 2H(4) C(15) N(3) O(3) S ">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="411.288115" avge_mass="411.6092"
                      composition="H(27) 2H(8) C(18) N(4) O(4) S ">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="485.270751" avge_mass="485.7109"
                      composition="H(29) 2H(8) C(20) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="509.270751" avge_mass="509.7323"
                      composition="H(29) 2H(8) C(22) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/images/icat_reagent.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Molecular &amp; Cellular Proteomics 2:428-442, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.mcponline.org/cgi/content/full/2/7/428</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-D" full_name="Applied Biosystems original ICAT(TM) d0"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:53:48"
                approved="1"
                record_id="13">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="442.224991" avge_mass="442.5728"
                     composition="H(34) C(20) N(4) O(5) S">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:Ignore mono_mass="227.085423" avge_mass="227.3033"
                      composition="H(15) C(10) N(2) O(2) S ">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="284.143273" avge_mass="284.3977"
                      composition="H(22) C(13) N(3) O(2) S ">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="328.169488" avge_mass="328.4502"
                      composition="H(26) C(15) N(3) O(3) S ">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="403.237901" avge_mass="403.5599"
                      composition="H(35) C(18) N(4) O(4) S ">
            <umod:element symbol="H" number="35"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="477.220537" avge_mass="477.6616"
                      composition="H(37) C(20) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="501.220537" avge_mass="501.683"
                      composition="H(37) C(22) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/images/icat_reagent.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Molecular &amp; Cellular Proteomics 2:428-442, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.mcponline.org/cgi/content/full/2/7/428</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NIPCAM" full_name="N-isopropylcarboxamidomethyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:39:14"
                approved="1"
                record_id="17">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="99.068414" avge_mass="99.1311" composition="H(9) C(5) N O">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Dimethylacrylamide, DMA</umod:alt_name>
         <umod:xref>
            <umod:text>Krutzsch and Inman, Analytical Biochemistry, 209, 109-116, (1993)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Galvani et.al. (2000) Electrophoresis vol 22 p2046-p2074</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8465942</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11465505</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PEO-Iodoacetyl-LC-Biotin"
                full_name="Biotinyl-iodoacetamidyl-3,6-dioxaoctanediamine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:40:00"
                approved="0"
                record_id="20">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="414.193691" avge_mass="414.5196"
                     composition="H(30) C(18) N(4) O(5) S">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Pierce EZ-Link PEO-Iodoacetyl Biotin</umod:alt_name>
         <umod:xref>
            <umod:text>12038753</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 278, Issue 7, 4500-4509, February 14, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.jbc.org/cgi/content/full/278/7/4500#F1</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>15253424</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phospho" full_name="Phosphorylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:11:24"
                approved="1"
                record_id="21">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="3">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>Usually don't see beta elimination of phosphate</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="97.976896" avge_mass="97.9952" flag="false"
                              composition="H(3) O(4) P">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="4"/>
               <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
         </umod:specificity>
         <umod:specificity hidden="0" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="97.976896" avge_mass="97.9952" flag="false"
                              composition="H(3) O(4) P">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="4"/>
               <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="79.966331" avge_mass="79.9799" composition="H O(3) P">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>IonSource</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/phos/phos.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0037</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0033</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0038</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0039</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0222</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PHOS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0034</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0036</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0035</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which is posttranslationally modified by the attachment of at least one phosphate group usually on serine, threonine or tyrosine residues, but also on aspartic acid or histidine residues.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dehydrated" full_name="Dehydration" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:05:47"
                approved="0"
                record_id="23">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="3">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="Q" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Any N-term" classification="Artefact"
                           spec_group="7">
            <umod:misc_notes>Pyro-carboxymethyl as a delta from Carboxymethyl-Cys</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-18.010565" avge_mass="-18.0153" composition="H(-2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:alt_name>didehydroalanine</umod:alt_name>
         <umod:alt_name>C-terminal imide</umod:alt_name>
         <umod:alt_name>Prompt loss of phosphate from phosphorylated residue</umod:alt_name>
         <umod:alt_name>D-Succinimide</umod:alt_name>
         <umod:xref>
            <umod:text>DHAS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0303</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0302</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0181</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0182</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DHB</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propionamide" full_name="Acrylamide adduct" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 10:35:51"
                approved="1"
                record_id="24">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="71.037114" avge_mass="71.0779" composition="H(5) C(3) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pyridylacetyl" full_name="pyridylacetyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:47:43"
                approved="1"
                record_id="25">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="119.037114" avge_mass="119.1207" composition="H(5) C(7) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9276974</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Pyro-carbamidomethyl"
                full_name="S-carbamoylmethylcysteine cyclization (N-terminus)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:05:25"
                approved="0"
                record_id="26">
         <umod:specificity hidden="0" site="C" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="39.994915" avge_mass="40.0208" composition="C(2) O">
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Carboxymethyl-Cys cyclization (N-terminus)</umod:alt_name>
         <umod:alt_name>Carbamidomethyl-Cys cyclization (N-terminus)</umod:alt_name>
         <umod:xref>
            <umod:text>12643538</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Proteome Res. 1, 181-187 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cyclisation of N-term Carbamidomethyl-Cys or Carboxymethyl-Cys. The delta is relative to Cys. For a delta relative to alkylated Cys, see Ammonia-loss and Dehydrated.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glu-&gt;pyro-Glu" full_name="Pyro-glu from E" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-06-05 13:54:56"
                approved="1"
                record_id="27">
         <umod:specificity hidden="0" site="E" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-18.010565" avge_mass="-18.0153" composition="H(-2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0031</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Miller et.al. Arch. Biochem. Biophy. (1993) 301, 41-52.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8442665</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRE</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Gln-&gt;pyro-Glu" full_name="Pyro-glu from Q" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-13 17:06:57"
                approved="1"
                record_id="28">
         <umod:specificity hidden="0" site="Q" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-17.026549" avge_mass="-17.0305" composition="H(-3) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0031</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SMA" full_name="N-Succinimidyl-3-morpholine acetate"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:41:18"
                approved="1"
                record_id="29">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="127.063329" avge_mass="127.1412" composition="H(9) C(6) N O(2)">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10446193</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Sherman, N. E., Yates, N. A., Shabanowitz, J., Hunt, D. F., Jeffery, W. A., Bartlet-Jones, M., and Pappin, D. J. C. (1995) Proceedings of the 43rd ASMS Conference on Mass Spectrometry and Allied Topics, May 21-26, 1995, Atlanta, GA</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cation:Na" full_name="Sodium adduct" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-14 19:43:17"
                approved="1"
                record_id="30">
         <umod:specificity hidden="0" site="D" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="E" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="21.981943" avge_mass="21.9818" composition="H(-1) Na">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Na" number="1"/>
         </umod:delta>
         <umod:misc_notes>Proton replaced by sodium cation</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Pyridylethyl" full_name="S-pyridylethylation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:43:38"
                approved="1"
                record_id="31">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="105.057849" avge_mass="105.1372" composition="H(7) C(7) N">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11760118</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl" full_name="Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-14 10:32:35"
                approved="1"
                record_id="34">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="14"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="13"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="10"/>
         <umod:specificity hidden="0" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="12"/>
         <umod:specificity hidden="0" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="12"/>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Multiple"
                           spec_group="11"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Post-translational"
                           spec_group="9"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="Post-translational"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
         <umod:alt_name>methyl ester</umod:alt_name>
         <umod:xref>
            <umod:text>METH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0318</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0338</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0064</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0061</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0063</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0065</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0069</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0336</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0305</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0272</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0076</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0071</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0070</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0073</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0234</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0273</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0317</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0337</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0299</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0072</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11875433</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0105</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Oxidation" full_name="Oxidation or Hydroxylation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:37:07"
                approved="0"
                record_id="35">
         <umod:specificity hidden="0" site="W" position="Anywhere" classification="Artefact"
                           spec_group="10"/>
         <umod:specificity hidden="0" site="H" position="Anywhere" classification="Artefact"
                           spec_group="10"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="9">
            <umod:misc_notes>Cysteine sulfenic acid</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="M" position="Anywhere" classification="Artefact"
                           spec_group="8">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="63.998285" avge_mass="64.1069" flag="false" composition="H(4) C O S">
               <umod:element symbol="H" number="4"/>
               <umod:element symbol="C" number="1"/>
               <umod:element symbol="O" number="1"/>
               <umod:element symbol="S" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Proline oxidation to glutamic semialdehyde</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="G" position="Any C-term" classification="Pre-translational"
                           spec_group="11">
            <umod:misc_notes>Hydroxyglycine derivative in amidation pathway</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="15.994915" avge_mass="15.9994" composition="O">
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>HYDR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0322</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11212008</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11120890</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DOPA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CSEA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14661084</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0026</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15569593</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0205</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0215</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Lagerwerf FM, van de Weert M, Heerma W, Haverkamp J, Rapid Commun Mass Spectrom. 1996;10(15):1905-10</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0029</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0030</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9004526</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0028</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11461766</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0027</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0235</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0146</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14661085</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12781462</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>2057999</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dimethyl" full_name="di-Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-18 14:35:31"
                approved="1"
                record_id="36">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="P" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>DIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0311</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0068</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14570711</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0067</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12964758</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0075</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0066</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Trimethyl" full_name="tri-Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-18 14:31:46"
                approved="1"
                record_id="37">
         <umod:specificity hidden="1" site="A" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="42.046950" avge_mass="42.0797" composition="H(6) C(3)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12590383</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0074</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0062</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Role of arginine and its methylated derivatives in cancer biology and treatment</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.cancerci.com/content/1/1/3</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Hirota et. al., Rapid Commun. Mass Spectrom., 17 371-6 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TRIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>RESID gives the delta as 43 Da?</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Methylthio" full_name="Beta-methylthiolation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:17:13"
                approved="0"
                record_id="39">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Multiple"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="45.987721" avge_mass="46.0916" composition="H(2) C S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Methyl methanethiosulfonate</umod:alt_name>
         <umod:alt_name>MMTS</umod:alt_name>
         <umod:xref>
            <umod:text>J. A. Kowalak and K. A. Walsh, Protein Science (1996) 5: 1625-1632</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0232</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TRC data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.trc-canada.com/white_papers.lasso</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Applied Biosystems iTRAQ(TM) Reagents Chemistry Reference Guide Part Number 4351918 Rev. A</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04351918.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0320</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8844851</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0101</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BMTH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Sulfo" full_name="O-Sulfonation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 11:16:55"
                approved="1"
                record_id="40">
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Sulfitolysis</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="79.956815" avge_mass="80.0632" composition="O(3) S">
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0362</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0361</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>SULF</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0171</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Medzihradszky et al., Mol. Cell. Proteomics 2004, 3, 429-440</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14752058</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0172</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex" full_name="Hexose" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 14:11:32"
                approved="1"
                record_id="41">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Other glycosylation"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other glycosylation"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other glycosylation"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other glycosylation"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Other glycosylation"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Other glycosylation"
                           spec_group="3">
            <umod:misc_notes>glycation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other glycosylation"
                           spec_group="1">
            <umod:misc_notes>glycation</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="162.052824" avge_mass="162.1406" composition="Hex">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:alt_name>Fructose</umod:alt_name>
         <umod:alt_name>Glucose</umod:alt_name>
         <umod:alt_name>Galactose</umod:alt_name>
         <umod:alt_name>Mannose</umod:alt_name>
         <umod:xref>
            <umod:text>GLUC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15279557</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0152</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0157</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0327</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0217</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CMAN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lipoyl" full_name="Lipoyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:06:53"
                approved="1"
                record_id="42">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="188.032956" avge_mass="188.3103" composition="H(12) C(8) O S(2)">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PDOC00168</umod:text>
            <umod:source>Prosite</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0118</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>LIPY</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3522581</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This group is normally a substituent on N6 of a lysine residue of an enzyme or other protein</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HexNAc" full_name="N-Acetylhexosamine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:10:27"
                approved="1"
                record_id="43">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="203.079373" avge_mass="203.1925" composition="HexNAc">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>GLCN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0151</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0154</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3086323</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0155</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The amine derivative of a hexose formed by replacing a hydroxyl group with an amino group.(+acetyl group)</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Farnesyl" full_name="Farnesylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:11:38"
                approved="1"
                record_id="44">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="204.187801" avge_mass="204.3511" composition="H(24) C(15)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="15"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15609361</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0102</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FARN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Myristoyl" full_name="Myristoylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:13:17"
                approved="1"
                record_id="45">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="G" position="Any N-term" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="210.198366" avge_mass="210.3556" composition="H(26) C(14) O">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PDOC00008</umod:text>
            <umod:source>Prosite</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0059</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0307</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0078</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>MYRI</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PyridoxalPhosphate" full_name="Pyridoxal phosphate"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:35:42"
                approved="1"
                record_id="46">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="229.014009" avge_mass="229.1266" composition="H(8) C(8) N O(5) P">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochemistry; D.Voet and J.G.Voet WILEY(p728)</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0119</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PLP</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The co-enzyme derivative of vitamin B6. Forms Schiff\'s bases of substrate amino acids during catalysis of transamination, decarboxylation and racemisation reactions.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Palmitoyl" full_name="Palmitoylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:38:43"
                approved="1"
                record_id="47">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:delta mono_mass="238.229666" avge_mass="238.4088" composition="H(30) C(16) O">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0080</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0079</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0106</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0077</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PALM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0339</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0060</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Palmitoylation is a post-translational modification that consists in the addition of a 16 carbons fatty acid, palmitate, to a cysteine residue through the creation of a thioester link.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="GeranylGeranyl" full_name="Geranyl-geranyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:47:48"
                approved="1"
                record_id="48">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="272.250401" avge_mass="272.4681" composition="H(32) C(20)">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="20"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0104</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15609361</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GERA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phosphopantetheine" full_name="Phosphopantetheine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:00:24"
                approved="1"
                record_id="49">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="340.085794" avge_mass="340.3330"
                     composition="H(21) C(11) N(2) O(6) P S">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0150</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PPAN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which contains at least one phosphopantetheine as the prosthetic group. In acyl carrier proteins (ACP) for example, it serves as a \'swinging arm\' for the attachment of activated fatty acid and amino-acid groups.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="FAD" full_name="Flavin adenine dinucleotide" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:16:18"
                approved="1"
                record_id="50">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="783.141486" avge_mass="783.5339"
                     composition="H(31) C(27) N(9) O(15) P(2)">
            <umod:element symbol="H" number="31"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="9"/>
            <umod:element symbol="O" number="15"/>
            <umod:element symbol="P" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0143</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.aw-bc.com/mathews/EF/FAD.GIF</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0144</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0145</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0221</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FAD</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Tripalmitate" full_name="N-acyl diglyceride cysteine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-18 11:47:54"
                approved="1"
                record_id="51">
         <umod:specificity hidden="1" site="C" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="788.725777" avge_mass="789.3049" composition="H(96) C(51) O(5)">
            <umod:element symbol="H" number="96"/>
            <umod:element symbol="C" number="51"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10356335</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Guanidinyl" full_name="Guanidination" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-15 19:58:44"
                approved="1"
                record_id="52">
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="42.021798" avge_mass="42.0400" composition="H(2) C N(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>homoarginine</umod:alt_name>
         <umod:xref>
            <umod:text>11078590</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ASMS 2001 abstract</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.indiana.edu/~reillyjp/ASMS2001posters/beardsley_poster.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>11821862</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11085420</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Anal. Biochem. 287, p110-117, 2000</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Specific for sidechain of lysine. Does not modify the N-termini except for glycine at a slower rate than the side chain of lysine.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HNE" full_name="4-hydroxynonenal (HNE)" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:38:12"
                approved="1"
                record_id="53">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="156.115030" avge_mass="156.2221" composition="H(16) C(9) O(2)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11327326</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Poli G, Schaur RJ., IUBMB Life 2000 Oct-Nov;50(4-5):315-21</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>A lipid-type modification. HNE forms a Michael addition product on Cysteine, Histidine and Lysines. Unusually, it doesn\'t replace a hydrogen on the amino acid side chain.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glucuronyl" full_name="N-glucuronylation" username_of_poster="jcottrell"
                group_of_poster="users"
                date_time_posted="2002-10-01 21:36:48"
                date_time_modified="2006-10-16 17:26:21"
                approved="1"
                record_id="54">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="176.032088" avge_mass="176.1241" composition="H(8) C(6) O(6)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:alt_name>glucuronosyl</umod:alt_name>
         <umod:xref>
            <umod:text>AA0291</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0058</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Lin, T.S. Kolattukudy, P.E., Eur. J. Biochem. 106, 341-351, 1980</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>7398618</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The addition of a sugar unit to a protein amino acid, e.g. the addition of glycan chains to proteins. Addition of glucuronic acid. Observed for N-term G</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glutathione" full_name="glutathione disulfide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-10-03 09:10:19"
                date_time_modified="2006-10-16 15:51:52"
                approved="1"
                record_id="55">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="305.068156" avge_mass="305.3076"
                     composition="H(15) C(10) N(3) O(6) S">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>3083866</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8344916</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0229</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GLUT</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Acetyl:2H(3)"
                full_name="Acetate labeling reagent (N-term &amp; K) (heavy form, +3amu)"
                username_of_poster="penner"
                group_of_poster="users"
                date_time_posted="2002-10-16 16:41:56"
                date_time_modified="2006-10-16 10:02:50"
                approved="1"
                record_id="56">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="45.029395" avge_mass="45.0552" composition="H(-1) 2H(3) C(2) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>N-trideuteriumacetoxy</umod:alt_name>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propionyl"
                full_name="Propionate labeling reagent light form (N-term &amp; K)"
                username_of_poster="penner"
                group_of_poster="users"
                date_time_posted="2002-10-16 16:52:38"
                date_time_modified="2006-10-16 10:17:00"
                approved="1"
                record_id="58">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="56.026215" avge_mass="56.0633" composition="H(4) C(3) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propionyl:13C(3)"
                full_name="Propionate labeling reagent heavy form (+3amu), N-term &amp; K"
                username_of_poster="penner"
                group_of_poster="users"
                date_time_posted="2002-10-16 16:55:47"
                date_time_modified="2006-10-16 10:27:21"
                approved="1"
                record_id="59">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="59.036279" avge_mass="59.0412" composition="H(4) 13C(3) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
            <umod:source>Journal</umod:source>
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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            <umod:text>11857757</umod:text>
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            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
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            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
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            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
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      <umod:mod title="Succinyl"
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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         <umod:xref>
            <umod:text>AA0130</umod:text>
            <umod:source>RESID</umod:source>
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
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            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
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         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
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