{"id":676,"sequence":"GPPGPMGPPGLAGPPGESGR","proforma":"[Oxidation][Oxidation]^2?GPPGPMGPPGLAGPPGESGR","modifications":[{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"M"},{"name":"Oxidation","count":2,"n_term":false,"unimod":35,"position":null,"residues":"P"}],"mods_ambiguous":false,"neutral_mass":1831.8522967437,"mh":1832.85957,"url":"https://www.msipep.com/peptide/676/"}