# OMSSA-internal-number, OMSSA-description, UniMod term
0,methylation of K,Methyl (K)
1,oxidation of M,Oxidation (M)
2,carboxymethyl C,Carboxymethyl (C)
3,carbamidomethyl C,Carbamidomethyl (C)
4,deamidation of N and Q, 
5,propionamide C,Propionamide (C)
6,phosphorylation of S,Phospho (S)
7,phosphorylation of T,Phospho (T)
8,phosphorylation of Y,Phospho (Y)
9,M cleavage from protein n-term, 
10,acetylation of protein n-term,Acetyl (N-term)
11,methylation of protein n-term,Methyl (N-term)
12,tri-methylation of protein n-term, 
13,beta methythiolation of D, 
14,methylation of Q, 
15,tri-methylation of K, 
16,methylation of D, 
17,methylation of E, 
18,methylation of peptide c-term, 
19,tri-deuteromethylation of D, 
20,tri-deuteromethylation of E, 
21,tri-deuteromethylation of peptide c-term, 
22,n-formyl met addition, 
23,2-amino-3-oxo-butanoic acid T, 
24,acetylation of K, 
25,amidation of peptide c-term, 
26,beta-methylthiolation of D, 
27,carboxyamidomethylation of K, 
28,carboxyamidomethylation of H, 
29,carboxyamidomethylation of D, 
30,carboxyamidomethylation of E, 
31,carbamylation of K, 
32,carbamylation of n-term peptide, 
33,citrullination of R, 
34,oxidation of C to cysteic acid, 
35,di-iodination of Y, 
36,di-methylation of K, 
37,di-methylation of R, 
38,di-methylation of peptide n-term, 
39,oxidation of F to dihydroxyphenylalanine, 
40,thioacylation of K, 
41,thioacylation of peptide n-term, 
42,farnesylation of C, 
43,formylation of K, 
44,formylation of peptide n-term, 
45,oxidation of W to formylkynurenin, 
46,fluorophenylalanine, 
47,gamma-carboxylation of D, 
48,gamma-carboxylation of E, 
49,geranyl-geranyl, 
50,glucuronylation of protein n-term, 
51,glutathione disulfide, 
52,ubiquitinylation residue, 
53,guanidination of K,Guanidinyl (K)
54,oxidation of H to N, 
55,oxidation of H to D, 
56,homoserine, 
57,homoserine lactone, 
58,oxidation of W to hydroxykynurenin, 
59,hydroxylation of D, 
60,hydroxylation of K, 
61,hydroxylation of N, 
62,hydroxylation of P, 
63,hydroxylation of F, 
64,hydroxylation of  Y, 
65,iodination of Y, 
66,oxidation of W to kynurenin, 
67,lipoyl K, 
68,methyl ester of peptide c-term, 
69,methyl ester of D, 
70,methyl ester of E, 
71,methyl ester of S, 
72,methyl ester of Y, 
73,methyl C, 
74,methyl H, 
75,methyl N, 
76,methylation of peptide n-term, 
77,methyl R, 
78,myristoleylation of G, 
79,myristoyl-4H of G, 
80,myristoylation of peptide n-term G, 
81,myristoylation of K, 
82,formylation of protein n-term, 
83,NEM C, 
84,NIPCAM, 
85,oxidation of W to nitro, 
86,oxidation of Y to nitro, 
87,O18 on peptide n-term, 
88,di-O18 on peptide n-term, 
89,oxidation of H, 
90,oxidation of W, 
91,phosphopantetheine S, 
92,palmitoylation of C, 
93,palmitoylation of K, 
94,palmitoylation of S, 
95,palmitoylation of T, 
96,phosphorylation of S with prompt loss, 
97,phosphorylation of T with prompt loss, 
98,phosphorylation with prompt loss on Y, 
99,phosphorylation with neutral loss on C, 
100,phosphorylation with neutral loss on D, 
101,phosphorylation with neutral loss on H, 
102,propionyl light K, 
103,propionyl light on peptide n-term, 
104,propionyl heavy K, 
105,propionyl heavy peptide n-term, 
106,pyridyl K, 
107,pyridyl peptide n-term, 
108,pyro-cmC, 
109,pyro-glu from n-term E, 
110,pyro-glu from n-term Q, 
111,oxidation of P to pyroglutamic acid, 
112,s-pyridylethylation of C, 
113,SeMet, 
114,sulfation of Y, 
115,sulphone of M,Dioxidation (M)
116,tri-iodination of Y, 
117,tri-methylation of R, 
118,n-acyl diglyceride cysteine, 
129,ICAT light, 
130,ICAT heavy, 
131,CAMthiopropanoyl K, 
132,phosphorylation with neutral loss on S, 
133,phosphorylation with neutral loss on T, 
134,phosphorylation of S with ETD loss, 
135,phosphorylation of T with ETD loss, 
136,heavy arginine-13C6, 
137,heavy arginine-13C6-15N4, 
138,heavy lysine-13C6, 
139,PNGasF in O18 water, 
140,beta elimination of S, 
141,beta elimination of T, 
162,oxidation of C to sulfinic acid, 
163,arginine to ornithine, 
164,dehydro of S and T, 
165,carboxykynurenin of W, 
166,sumoylation of K, 
167,iTRAQ114 on nterm, 
168,iTRAQ114 on K, 
169,iTRAQ114 on Y, 
170,iTRAQ115 on nterm, 
171,iTRAQ115 on K, 
172,iTRAQ115 on Y, 
173,iTRAQ116 on nterm, 
174,iTRAQ116 on K, 
175,iTRAQ116 on Y, 
176,iTRAQ117 on nterm, 
177,iTRAQ117 on K, 
178,iTRAQ117 on Y, 
179,MMTS on C, 
180,heavy lysine - 2H4, 
181,heavy lysine - 13C6 15N2, 
182,Asparagine HexNAc, 
183,Asparagine dHexHexNAc, 
184,Serine HexNAc, 
185,Threonine HexNAc, 

