histamine + beta-alanine + ATP <=> carcinine + AMP + diphosphate + H(+)
histamine + beta-alanine + atp <=> carcinine + amp + diphosphate + h(+)
histamine + beta-alanine + ATP <=> carcinine + AMP + diphosphate + H(+)
histamine + beta-alanine + atp <=> carcinine + amp + diphosphate + h(+)