label: uridine(54) in tRNA + (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + NADH + H(+) = 5-methyluridine(54) in tRNA + (6S)-5,6,7,8-tetrahydrofolate + NAD(+)
label_lc: uridine(54) in trna + (6r)-5,10-methylene-5,6,7,8-tetrahydrofolate + nadh + h(+) = 5-methyluridine(54) in trna + (6s)-5,6,7,8-tetrahydrofolate + nad(+)