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[Oxidation]^2?DGNPGNDGPPGR

Sequence: DGNPGNDGPPGR (12 residues)
Modifications: 2× Oxidation (P) Unimod:35
Monoisotopic mass: 1183.48539 Da
Calculated ions: [M+H]+ 1184.4927 · [M+Na]+ 1206.4746 · [M+K]+ 1222.4486 · [M+2H]2+ 592.7500

Position in protein

Collagen alpha-2(I) chain residues 927–938 of 1366

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-2(I) chain UniProt P08123	1184.4900	1184.4927	-2.3	Homo sapiens (human) · Pancreas · Pancreatic tumour	10.1007/s00216-010-3554-6	Approved Reported theoretical m/z differs from the calculated value