{"id":863,"sequence":"PQLIVMGNLDR","proforma":"[Oxidation]?[Acetyl]-PQLIVMGNLDR","modifications":[{"name":"Acetyl","count":1,"n_term":true,"unimod":1,"position":null,"residues":""},{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"M"}],"mods_ambiguous":false,"neutral_mass":1312.6809213237,"mh":1313.6882,"url":"https://msipep.com/peptide/863/"}