iodoacetamide derivatized residue modified L-cysteine residue S-carboxamidomethyl-L-cysteine 160.0306549072265625 160.1999969482421875 57.021465301513671875 57.049999237060546875 none artifact From DeltaMass: (name misspelled "Carboxyamidomethyl Cystenyl") [JSG]. PSI-MOD Carbamidomethyl A protein modification that effectively converts an L-cysteine residue to S-carboxamidomethyl-L-cysteine. S-carbamoylmethyl-L-cysteine carbamoylmethylcysteine C 2 H 3 N 1 O 1 Iodoacetamide derivative Carboxamidomethyl (on Cysteine) MOD:01060 CamC carbamidomethylc C 5 H 8 N 2 O 2 S 1 amidocarboxymethylcysteine C CamCys Carboxyamidomethyl Cystenyl