| Domain | Name | Category | Type |
| IPR000304 | Pyrroline-5-carboxylate reductase | Family | Family |
| IPR008927 | 6-phosphogluconate dehydrogenase-like, C-terminal domain superfamily | Family | Homologous superfamily |
| IPR028939 | Pyrroline-5-carboxylate reductase, catalytic, N-terminal | Domain | Domain |
| IPR029036 | Pyrroline-5-carboxylate reductase, dimerisation domain | Domain | Domain |
| IPR036291 | NAD(P)-binding domain superfamily | Family | Homologous superfamily |