Noun
methenyltetrahydromethanopterin cyclohydrolase
(biochemistry) A hydrolase enzyme that catalyzes the chemical reaction 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + H2O
⇌
{\displaystyle \rightleftharpoons }
5-formyl-5,6,7,8-tetrahydromethanopterin.