| Domain | Name | Category | Type |
| IPR000836 | Phosphoribosyltransferase domain | Domain | Domain |
| IPR001754 | Orotidine 5'-phosphate decarboxylase domain | Domain | Domain |
| IPR004467 | Orotate phosphoribosyl transferase domain | Domain | Domain |
| IPR011060 | Ribulose-phosphate binding barrel | Family | Homologous superfamily |
| IPR013785 | Aldolase-type TIM barrel | Family | Homologous superfamily |
| IPR014732 | Orotidine 5'-phosphate decarboxylase | Family | Family |
| IPR018089 | Orotidine 5'-phosphate decarboxylase, active site | Site | Active site |
| IPR023031 | Orotate phosphoribosyltransferase | Family | Family |
| IPR029057 | Phosphoribosyltransferase-like | Family | Homologous superfamily |