>sp|Q8U0P6|PYRDB_PYRFU Dihydroorotate dehydrogenase B (NAD(+)), catalytic subunit OS=Pyrococcus furiosus GN=pyrD MSIKIELFGITFENPLILASGVVDMTPELLRRAHKEGAGGVVTKSIGIEPRKGYDNPTVV EVPCGLINAMGLPNPGWKAFLEEFEKESFDFPVIVSIFGGNPEEFAFLAEKLERVGDAFE LNLSCPHAKGYGLEIGQDPENVYRVVKAVKDVTDKPVIAKLTPNTSDITKLGLAAEKAEA DGVSAINTLKAIAIDIYAKRPILSNKFGGYSGPGIKPIALRAVYDLASKLDIPIIGIGGI TTWQDAVEFLLAGASAVQIGTAVYLKGFSVFREIAEGIRKYLEEEGFSSVKEIIGLAQKV