| methenyltetrahydromethanopterin cyclohydrolase | |
| Ec Number: | 3.5.4.27 |
| Cas Number: | 99533-50-3 |
| Go Code: | 0018759 |
| Width: | 270 |
In enzymology, a methenyltetrahydromethanopterin cyclohydrolase is an enzyme that catalyzes the chemical reaction
5,10-methenyl-5,6,7,8-tetrahydromethanopterin + H2O
\rightleftharpoons
Thus, the two substrates of this enzyme are 5,10-methenyl-5,6,7,8-tetrahydromethanopterin and H2O, whereas its product is 5-formyl-5,6,7,8-tetrahydromethanopterin.
This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is 5,10-methenyltetrahydromethanopterin 10-hydrolase (decyclizing). Other names in common use include 5,10-methenyltetrahydromethanopterin cyclohydrolase, N5,N10-methenyltetrahydromethanopterin cyclohydrolase, and methenyl-H4MPT cyclohydrolase. This enzyme participates in folate biosynthesis.