| 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 |
| IPR000353 | MHC class II, beta chain, N-terminal | Domain |
| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR050160 | Major Histocompatibility Complex/Immunoglobulin | Family |
| IPR014745 | MHC class II, alpha/beta chain, N-terminal | Homologous Superfamily |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR011162 | MHC classes I/II-like antigen recognition protein | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR044873 | Spike glycoprotein S2, coronavirus, heptad repeat 1 | Domain |
| IPR044366 | Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 | Domain |
| IPR018548 | Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus | Domain |
| IPR044341 | Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like | Domain |
| IPR032500 | Spike glycoprotein S1, N-terminal domain, betacoronavirus-like | Domain |
| IPR042578 | Spike glycoprotein, betacoronavirus | Family |
| IPR036326 | Spike S1 subunit, receptor binding domain superfamily, betacoronavirus | Homologous Superfamily |
| IPR043002 | Spike glycoprotein, N-terminal domain superfamily | Homologous Superfamily |
| IPR044874 | Spike glycoprotein S2, coronavirus, heptad repeat 2 | Domain |
| IPR043473 | Spike glycoprotein S2 superfamily, coronavirus | Homologous Superfamily |
| IPR043607 | Coronavirus spike glycoprotein S1, C-terminal | Domain |
| IPR002552 | Spike glycoprotein S2, coronavirus | Domain |