| Chain | GOid | namespace | contents |
| A | 0004151 | molecular_function | dihydroorotase activity |
| A | 0004152 | molecular_function | dihydroorotate dehydrogenase activity |
| A | 0005515 | molecular_function | protein binding |
| A | 0005737 | cellular_component | cytoplasm |
| A | 0005739 | cellular_component | mitochondrion |
| A | 0005743 | cellular_component | mitochondrial inner membrane |
| A | 0006207 | biological_process | 'de novo' pyrimidine nucleobase biosynthetic process |
| A | 0006221 | biological_process | pyrimidine nucleotide biosynthetic process |
| A | 0006225 | biological_process | UDP biosynthetic process |
| A | 0009220 | biological_process | pyrimidine ribonucleotide biosynthetic process |
| A | 0016020 | cellular_component | membrane |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0016627 | molecular_function | oxidoreductase activity, acting on the CH-CH group of donors |
| A | 0044205 | biological_process | 'de novo' UMP biosynthetic process |
| A | 0106430 | molecular_function | dihydroorotate dehydrogenase (quinone) activity |