| Domain | Name | Category | Type |
| IPR005720 | Dihydroorotate dehydrogenase domain | Domain | Domain |
| IPR009051 | Alpha-helical ferredoxin | Family | Homologous superfamily |
| IPR013785 | Aldolase-type TIM barrel | Family | Homologous superfamily |
| IPR017896 | 4Fe-4S ferredoxin-type, iron-sulphur binding domain | Domain | Domain |
| IPR017900 | 4Fe-4S ferredoxin, iron-sulphur binding, conserved site | Site | Conserved site |
| IPR023753 | FAD/NAD(P)-binding domain | Domain | Domain |
| IPR028261 | Dihydroprymidine dehydrogenase domain II | Domain | Domain |
| IPR036188 | FAD/NAD(P)-binding domain superfamily | Family | Homologous superfamily |
| IPR044512 | Dihydropyrimidine dehydrogenase | Family | Family |