guanidinoacetate + ATP <=> phosphoguanidinoacetate + ADP + H(+)
guanidinoacetate + atp <=> phosphoguanidinoacetate + adp + h(+)
guanidinoacetate + ATP <=> phosphoguanidinoacetate + ADP + H(+)
guanidinoacetate + atp <=> phosphoguanidinoacetate + adp + h(+)