{"id":664,"sequence":"GLHGEFGLPGPAGPR","proforma":"[Oxidation]?GLHGEFGLPGPAGPR","modifications":[{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"P"}],"mods_ambiguous":false,"neutral_mass":1476.7473610937,"mh":1477.75464,"url":"https://www.msipep.com/peptide/664/"}