(S)-dihydroorotate + a menaquinone = orotate + a menaquinol
(s)-dihydroorotate + a menaquinone = orotate + a menaquinol
(S)-dihydroorotate + a menaquinone = orotate + a menaquinol
(s)-dihydroorotate + a menaquinone = orotate + a menaquinol