| Domain | Name | Category | Type |
| IPR001300 | Peptidase C2, calpain, catalytic domain | Domain | Domain |
| IPR007330 | MIT domain | Domain | Domain |
| IPR022682 | Peptidase C2, calpain, large subunit, domain III | Domain | Domain |
| IPR022683 | Peptidase C2, calpain, domain III | Domain | Domain |
| IPR022684 | Peptidase C2, calpain family | Family | Family |
| IPR036181 | MIT domain superfamily | Family | Homologous superfamily |
| IPR036213 | Calpain large subunit, domain III superfamily | Family | Homologous superfamily |
| IPR038765 | Papain-like cysteine peptidase superfamily | Family | Homologous superfamily |