| Domain | Name | Category | Type |
| IPR000169 | Cysteine peptidase, cysteine active site | Site | Active site |
| IPR000668 | Peptidase C1A, papain C-terminal | Domain | Domain |
| IPR025660 | Cysteine peptidase, histidine active site | Site | Active site |
| IPR038765 | Papain-like cysteine peptidase superfamily | Family | Homologous superfamily |
| IPR039417 | Papain-like cysteine endopeptidase | Domain | Domain |