| Domain | Name | Category | Type |
| IPR001733 | Peptidase S26B | Family | Family |
| IPR015927 | Peptidase S24/S26A/S26B/S26C | Domain | Domain |
| IPR019533 | Peptidase S26 | Domain | Domain |
| IPR019756 | Peptidase S26A, signal peptidase I, serine active site | Site | Active site |
| IPR019758 | Peptidase S26A, signal peptidase I, conserved site | Site | Conserved site |
| IPR036286 | LexA/Signal peptidase-like superfamily | Family | Homologous superfamily |
| IPR037712 | Signal peptidase complex catalytic subunit SEC11A | Family | Family |