Tags: Enzyme.
In enzymology a methenyltetrahydrofolate cyclohydrolase (EC 3.5.4.9) is an enzyme that catalyzes the chemical reaction510-methenyltetrahydrofolate + H2O 10-formyltetrahydrofolateThus the two substrates of this enzyme are 510-methenyltetrahydrofolate and H2O whereas its product is 10-formyltetrahydrofolate.This enzyme belongs to the family of hydrolases those acting on carbon-nitrogen bonds other than peptide bonds specifically in cyclic amidines.