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[Oxidation]^2?GDGGPPGMTGFPGAAGR

Sequence: GDGGPPGMTGFPGAAGR (17 residues)
Modifications: 2× Oxidation (P) Unimod:35
Monoisotopic mass: 1532.66779 Da
Calculated ions: [M+H]+ 1533.6751 · [M+Na]+ 1555.6570 · [M+K]+ 1571.6309 · [M+2H]2+ 767.3412

Position in protein

Collagen alpha-2(I) chain residues 778–794 of 1366

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-2(I) chain UniProt P08123	1533.7190	1533.6751	+28.6	Homo sapiens (human) · Lung	10.1002/pmic.200800495	Approved Reported theoretical m/z differs from the calculated value