(S)-dihydroorotate + NAD(+) = orotate + NADH + H(+)
(s)-dihydroorotate + nad(+) = orotate + nadh + h(+)
(S)-dihydroorotate + NAD(+) = orotate + NADH + H(+)
(s)-dihydroorotate + nad(+) = orotate + nadh + h(+)