(6R)-5,10-methenyltetrahydrofolate + NH4(+) => 5-formimidoyltetrahydrofolate + 2 H(+)
(6r)-5,10-methenyltetrahydrofolate + nh4(+) => 5-formimidoyltetrahydrofolate + 2 h(+)
(6R)-5,10-methenyltetrahydrofolate + NH4(+) => 5-formimidoyltetrahydrofolate + 2 H(+)
(6r)-5,10-methenyltetrahydrofolate + nh4(+) => 5-formimidoyltetrahydrofolate + 2 h(+)