| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR050160 | Major Histocompatibility Complex/Immunoglobulin | Family |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR011162 | MHC classes I/II-like antigen recognition protein | Homologous Superfamily |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR014745 | MHC class II, alpha/beta chain, N-terminal | Homologous Superfamily |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |
| IPR001003 | MHC class II, alpha chain, N-terminal | Domain |
| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR011162 | MHC classes I/II-like antigen recognition protein | Homologous Superfamily |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR014745 | MHC class II, alpha/beta chain, N-terminal | Homologous Superfamily |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |
| IPR050160 | Major Histocompatibility Complex/Immunoglobulin | Family |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR000353 | MHC class II, beta chain, N-terminal | Domain |
| IPR036397 | Ribonuclease H superfamily | Homologous Superfamily |
| IPR043128 | Reverse transcriptase/Diguanylate cyclase domain | Homologous Superfamily |
| IPR001995 | Peptidase A2A, retrovirus, catalytic | Domain |
| IPR001878 | Zinc finger, CCHC-type | Domain |
| IPR008919 | Retrovirus capsid, N-terminal | Homologous Superfamily |
| IPR012344 | Matrix protein, lentiviral and alpha-retroviral, N-terminal | Homologous Superfamily |
| IPR036862 | Integrase, C-terminal domain superfamily, retroviral | Homologous Superfamily |
| IPR018061 | Retropepsins | Domain |
| IPR010661 | Reverse transcriptase thumb | Domain |
| IPR002156 | Ribonuclease H domain | Domain |
| IPR036875 | Zinc finger, CCHC-type superfamily | Homologous Superfamily |
| IPR003308 | Integrase, N-terminal zinc-binding domain | Domain |
| IPR001584 | Integrase, catalytic core | Domain |
| IPR045345 | Retroviral nucleocapsid Gag protein p24, C-terminal domain | Domain |
| IPR010999 | Retroviral matrix protein | Homologous Superfamily |
| IPR021109 | Aspartic peptidase domain superfamily | Homologous Superfamily |
| IPR001969 | Aspartic peptidase, active site | Active Site |
| IPR012337 | Ribonuclease H-like superfamily | Homologous Superfamily |
| IPR017856 | Integrase-like, N-terminal | Homologous Superfamily |
| IPR000071 | Immunodeficiency lentiviral matrix, N-terminal | Domain |
| IPR043502 | DNA/RNA polymerase superfamily | Homologous Superfamily |
| IPR001037 | Integrase, C-terminal, retroviral | Domain |
| IPR034170 | Retropepsin-like catalytic domain | Domain |
| IPR000477 | Reverse transcriptase domain | Domain |
| IPR010659 | Reverse transcriptase connection | Domain |
| IPR008916 | Retrovirus capsid, C-terminal | Homologous Superfamily |