| Domain | Name | Category | Type |
| IPR001578 | Peptidase C12, ubiquitin carboxyl-terminal hydrolase | Domain | Domain |
| IPR030297 | Ubiquitin carboxyl-terminal hydrolase L1 | Family | Family |
| IPR036959 | Peptidase C12, ubiquitin carboxyl-terminal hydrolase superfamily | Family | Homologous superfamily |
| IPR038765 | Papain-like cysteine peptidase superfamily | Family | Homologous superfamily |