| Domain | Name | Category | Type |
| IPR001357 | BRCT domain | Domain | Domain |
| IPR002008 | DNA polymerase family X, beta-like | Family | Family |
| IPR002054 | DNA-directed DNA polymerase X | Domain | Domain |
| IPR010996 | DNA polymerase beta-like, N-terminal domain | Domain | Domain |
| IPR018944 | DNA polymerase lambda, fingers domain | Domain | Domain |
| IPR019843 | DNA polymerase family X, binding site | Site | Binding site |
| IPR022312 | DNA polymerase family X | Family | Family |
| IPR027421 | DNA polymerase lambda lyase domain superfamily | Family | Homologous superfamily |
| IPR028207 | DNA polymerase beta, palm domain | Domain | Domain |
| IPR029398 | DNA polymerase beta, thumb domain | Domain | Domain |
| IPR036420 | BRCT domain superfamily | Family | Homologous superfamily |
| IPR037160 | DNA polymerase, thumb domain superfamily | Family | Homologous superfamily |
| IPR043519 | Nucleotidyltransferase superfamily | Family | Homologous superfamily |