Search › Peptide

[Oxidation]^2?GPPGPMGPPGLAGPPGESGR

Sequence: GPPGPMGPPGLAGPPGESGR (20 residues)
Modifications: 2× Oxidation (P) Unimod:35
Monoisotopic mass: 1815.85738 Da
Calculated ions: [M+H]+ 1816.8647 · [M+Na]+ 1838.8466 · [M+K]+ 1854.8205 · [M+2H]2+ 908.9360

Position in protein

Collagen alpha-1(I) chain residues 995–1014 of 1464

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-1(I) chain UniProt P02452	1816.8500	1816.8647	-8.1	Homo sapiens (human) · Pancreas · Pancreatic tumour	10.1007/s00216-010-3554-6	Approved Reported theoretical m/z differs from the calculated value