{"id":652,"sequence":"GEQGPAGPPGFQGLPGPSGPAGEVGKPGER","proforma":"[Oxidation]^3?GEQGPAGPPGFQGLPGPSGPAGEVGKPGER","modifications":[{"name":"Oxidation","count":3,"n_term":false,"unimod":35,"position":null,"residues":"P"}],"mods_ambiguous":false,"neutral_mass":2831.3474488237002,"mh":2832.35473,"url":"https://msipep.com/peptide/652/"}