(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O <=> (6S)-5,6,7,8-tetrahydrofolate + L-serine
(6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + h2o <=> (6s)-5,6,7,8-tetrahydrofolate + l-serine
(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O <=> (6S)-5,6,7,8-tetrahydrofolate + L-serine
(6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + h2o <=> (6s)-5,6,7,8-tetrahydrofolate + l-serine