{"id":849,"sequence":"NHQGPKR","proforma":"[Oxidation]?NHQGPKR","modifications":[{"name":"Oxidation","count":1,"n_term":false,"unimod":35,"position":null,"residues":"HW"}],"mods_ambiguous":false,"neutral_mass":851.4361977336999,"mh":852.44347,"url":"https://www.msipep.com/peptide/849/"}