| Domain | Name | Category | Type |
| IPR006133 | DNA-directed DNA polymerase, family B, exonuclease domain | Domain | Domain |
| IPR006134 | DNA-directed DNA polymerase, family B, multifunctional domain | Domain | Domain |
| IPR006172 | DNA-directed DNA polymerase, family B | Family | Family |
| IPR012337 | Ribonuclease H-like superfamily | Family | Homologous superfamily |
| IPR013697 | DNA polymerase epsilon, catalytic subunit A, C-terminal | Domain | Domain |
| IPR029703 | DNA polymerase epsilon catalytic subunit | Family | Family |
| IPR036397 | Ribonuclease H superfamily | Family | Homologous superfamily |
| IPR042087 | DNA polymerase family B, thumb domain | Family | Homologous superfamily |
| IPR043502 | DNA/RNA polymerase superfamily | Family | Homologous superfamily |