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[Oxidation]^2?GPNGDAGRPGEPGLMGPR

Sequence: GPNGDAGRPGEPGLMGPR (18 residues)
Modifications: 2× Oxidation (P) Unimod:35
Monoisotopic mass: 1765.81658 Da
Calculated ions: [M+H]+ 1766.8239 · [M+Na]+ 1788.8058 · [M+K]+ 1804.7797 · [M+2H]2+ 883.9156

Position in protein

Collagen alpha-2(I) chain residues 433–450 of 1366

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-2(I) chain UniProt P08123	1766.7800	1766.8239	-24.8	Homo sapiens (human) · Pancreas · Pancreatic tumour	10.1007/s00216-010-3554-6	Approved Reported theoretical m/z differs from the calculated value