carbamoylated residue 43.0058135986328125 43.020000457763671875 A protein modification that effectively replaces a hydrogen atom with a carbamoyl (carboxamido) group. Replacement of an amino hydrogen produces a ureido group. C 1 H 1 N 1 O 1 Carbamyl Carbamylation Carbamylation MOD:00398 PSI-MOD This modification can be produced by hydrogen cyanate, either used as a reagent or as released by urea degradation in solution [JSG]. Unimod:5 X protein modification categorized by chemical process