Orotate reductase (NADH) pyrD MSIKIELFGITFENPLILASGVVDMTPELLRRAHKEGAGGVVTKSIGIEPRKGYDNPTVVEVPCGLINAMGLPNPGWKAFLEEFEKESFDFPVIVSIFGGNPEEFAFLAEKLERVGDAFELNLSCPHAKGYGLEIGQDPENVYRVVKAVKDVTDKPVIAKLTPNTSDITKLGLAAEKAEADGVSAINTLKAIAIDIYAKRPILSNKFGGYSGPGIKPIALRAVYDLASKLDIPIIGIGGITTWQDAVEFLLAGASAVQIGTAVYLKGFSVFREIAEGIRKYLEEEGFSSVKEIIGLAQKV Catalyzes the conversion of dihydroorotate to orotate with NAD(+) as electron acceptor (By similarity). Dihydrdoorotate oxidase B PYRDB_PYRFU 300 Dihydroorotate dehydrogenase B (NAD(+)), catalytic subunit PF1539