label: (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + UMP + NADPH + H(+) = 5-methyl-UMP + (6S)-5,6,7,8-tetrahydrofolate + NADP(+)
label_lc: (6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + ump + nadph + h(+) = 5-methyl-ump + (6s)-5,6,7,8-tetrahydrofolate + nadp(+)