| Domain | Name | Category | Type |
| IPR000834 | Peptidase M14, carboxypeptidase A | Domain | Domain |
| IPR008969 | Carboxypeptidase-like, regulatory domain superfamily | Family | Homologous superfamily |
| IPR027063 | Carboxypeptidase N catalytic chain | Family | Family |
| IPR033814 | Carboxypeptidase N, N-terminal domain | Domain | Domain |