GO:0030412

formimidoyltetrahydrofolate cyclodeaminase activity

Details: 
Catalysis of the reaction: 5-formimidoyltetrahydrofolate + 2 H(+) = 5,10-methenyltetrahydrofolate + NH(4)(+). [EC:4.3.1.4, RHEA:22739]
Evidence Code: 
IEA