(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + H2O => (6S)-5,6,7,8-tetrahydrofolate + formaldehyde
(6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + h2o => (6s)-5,6,7,8-tetrahydrofolate + formaldehyde
(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + H2O => (6S)-5,6,7,8-tetrahydrofolate + formaldehyde
(6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + h2o => (6s)-5,6,7,8-tetrahydrofolate + formaldehyde