# OC Root 2nd 3rd 4th PC Gene/Definition OC.207719 Archaea.16079 Euryarchaeota.15044 Haloquadratum.1947 hwa.71 hwa:HQ_1052A pyrD; dihydroorotate dehydrogenase (quinone); K00254 dihydroorotate dehydrogenase [EC:1.3.5.2] OC.207719 Archaea.16079 Euryarchaeota.15044 Haloquadratum.1947 hwc.82 hwc:Hqrw_1058 pyrD; dihydroorotate dehydrogenase (quinone); K00254 dihydroorotate dehydrogenase [EC:1.3.5.2]