| Domain | Name | Category | Type |
| IPR000860 | Porphobilinogen deaminase | Family | Family |
| IPR022417 | Porphobilinogen deaminase, N-terminal | Domain | Domain |
| IPR022418 | Porphobilinogen deaminase, C-terminal | Domain | Domain |
| IPR022419 | Porphobilinogen deaminase, dipyrromethane cofactor binding site | Site | Binding site |
| IPR036803 | Porphobilinogen deaminase, C-terminal domain superfamily | Family | Homologous superfamily |