sulfur containing modified residue phosphorus containing modified residue modified L-glutamic acid residue 5-glutamyl coenzyme A thioester (2S)-2-amino-5-(2-[([3-([(2R)-2-hydroxy-3,3-dimethyl-4-([3'-phospho-adenosyl-5'-diphosphoryl]-oxy)-butanoyl]-amino)-propanoyl]-amino)-ethyl]-sulfanyl)-5-oxopentanoic acid (2S)-2-amino-5-([2-(3-[(2R)-2-hydroxy-3,3-dimethyl-4-([3'-phospho-adenosyl-5'-diphosphoryl]-oxy)-butanamido]-propanamido)-ethyl]-sulfanyl)-5-oxopentanoic acid 5-glutamyl 4-[(3'-phospho-adenosyl-5'-diphosphoryl)oxy]pantetheine thioester 5-glutamyl coenzyme A thioester 5-glutamyl coenzyme A thioester intermediate 749.1046142578125 749.52001953125 878.147216796875 878.6300048828125 A protein modification that effectively converts an L-glutamic acid residue to 5-glutamyl coenzyme A thioester. C 21 H 34 N 7 O 15 P 3 S 1 C 26 H 41 N 8 O 18 P 3 S 1 E MOD:01972 PSI-MOD natural