{"id":597,"sequence":"ASQKRPSQRHGSKYLA","proforma":"[Acetyl]-ASQKRPSQRHGSKYLA","modifications":[{"name":"Acetyl","count":1,"n_term":true,"unimod":1,"position":null,"residues":"A"}],"mods_ambiguous":false,"neutral_mass":1854.9812772337,"mh":1855.98855,"url":"https://www.msipep.com/peptide/597/"}