{"id":1141,"sequence":"GVQGPPGPAGPR","proforma":"[Oxidation]?GVQGPPGPAGPR","modifications":[{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"P"}],"mods_ambiguous":false,"neutral_mass":1104.5676058237,"mh":1105.57488,"url":"https://msipep.com/peptide/1141/"}