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[Oxidation]^2?GPKGENGVVGPTGPVGAAGPAGPNGPPGPAGSR

Sequence: GPKGENGVVGPTGPVGAAGPAGPNGPPGPAGSR (33 residues)
Modifications: 2× Oxidation (P) Unimod:35
Monoisotopic mass: 2864.41653 Da
Calculated ions: [M+H]+ 2865.4238 · [M+Na]+ 2887.4058 · [M+K]+ 2903.3797 · [M+2H]2+ 1433.2155

Position in protein

Collagen alpha-2(I) chain residues 745–777 of 1366

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-2(I) chain UniProt P08123	2865.3600	2865.4238	-22.3	Homo sapiens (human) · Pancreas · Pancreatic tumour	10.1007/s00216-010-3554-6	Approved Reported theoretical m/z differs from the calculated value