{"id":1291,"sequence":"GPPGLPAHLDEELQATLHDFR","proforma":"[Oxidation]?GPPGLPAHLDEELQATLHDFR","modifications":[{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"HW"}],"mods_ambiguous":false,"neutral_mass":2328.1498586737002,"mh":2329.15714,"url":"https://www.msipep.com/peptide/1291/"}