6.3.2.11	ATP + L-His + beta-Ala	the concentration of histidine in muscle and plasma is high relative to its Km with muscle carnosine synthase, whereas beta-alanine exists in low concentration in muscle and has a higher Km with muscle carnosine synthase, which indicates that it is the availability of beta-alanine that is limiting to the synthesis of carnosine in skeletal muscle	
6.3.2.11	ATP + L-histidine + beta-alanine	-	
6.3.2.11	L-histidine + beta-alanine + ATP	-