| IPR036397 | Ribonuclease H superfamily | Homologous Superfamily |
| IPR036157 | dUTPase-like superfamily | Homologous Superfamily |
| IPR043128 | Reverse transcriptase/Diguanylate cyclase domain | Homologous Superfamily |
| IPR001995 | Peptidase A2A, retrovirus, catalytic | Domain |
| IPR021109 | Aspartic peptidase domain superfamily | Homologous Superfamily |
| IPR001969 | Aspartic peptidase, active site | Active Site |
| IPR029054 | dUTPase-like | Domain |
| IPR036862 | Integrase, C-terminal domain superfamily, retroviral | Homologous Superfamily |
| IPR012337 | Ribonuclease H-like superfamily | Homologous Superfamily |
| IPR018061 | Retropepsins | Domain |
| IPR017856 | Integrase-like, N-terminal | Homologous Superfamily |
| IPR010661 | Reverse transcriptase thumb | Domain |
| IPR002156 | Ribonuclease H domain | Domain |
| IPR003308 | Integrase, N-terminal zinc-binding domain | Domain |
| IPR001584 | Integrase, catalytic core | Domain |
| IPR043502 | DNA/RNA polymerase superfamily | Homologous Superfamily |
| IPR033704 | dUTPase, trimeric | Domain |
| IPR001037 | Integrase, C-terminal, retroviral | Domain |
| IPR000477 | Reverse transcriptase domain | Domain |
| IPR010659 | Reverse transcriptase connection | Domain |