6.3.2.10	UDP-N-acetylmuramoyl-tripeptide-D-alanyl-D-alanine ligase	carboxylic acid amide formation	-	Escherichia coli	P11880, P11880, P11880	
6.3.2.29	cyanophycin synthase (L-aspartate-adding)	carboxylic acid amide formation	-	Trichormus variabilis	O86109	
6.3.2.30	cyanophycin synthase (L-arginine-adding)	carboxylic acid amide formation	-	Trichormus variabilis	O86109