a 5,6-dihydrouridine in tRNA + NAD(+) => a uridine in tRNA + NADH + H(+)
a 5,6-dihydrouridine in trna + nad(+) => a uridine in trna + nadh + h(+)
a 5,6-dihydrouridine in tRNA + NAD(+) => a uridine in tRNA + NADH + H(+)
a 5,6-dihydrouridine in trna + nad(+) => a uridine in trna + nadh + h(+)