beta-alanine + L-histidine + ATP <=> carnosine + ADP + phosphate + H(+)
beta-alanine + l-histidine + atp <=> carnosine + adp + phosphate + h(+)
beta-alanine + L-histidine + ATP <=> carnosine + ADP + phosphate + H(+)
beta-alanine + l-histidine + atp <=> carnosine + adp + phosphate + h(+)