3-(carboxamidomethylthio)propanoylated residue CAMthiopropanoyl of Lys 146.0275726318359375 146.19000244140625 274.122528076171875 274.3599853515625 true none C 5 H 8 N 1 O 2 S 1 C 11 H 20 N 3 O 3 S 1 artifact K PSI-MOD OBSOLETE because Unimod entry 334 is merged with Unimod 293. Remap to MOD:00612 MOD:00641