| Domain | Name | Category | Type |
| IPR001003 | MHC class II, alpha chain, N-terminal | Domain | Domain |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Site | Conserved site |
| IPR003597 | Immunoglobulin C1-set | Domain | Domain |
| IPR007110 | Immunoglobulin-like domain | Domain | Domain |
| IPR011162 | MHC classes I/II-like antigen recognition protein | Family | Homologous superfamily |
| IPR013783 | Immunoglobulin-like fold | Family | Homologous superfamily |
| IPR014745 | MHC class II, alpha/beta chain, N-terminal | Family | Homologous superfamily |
| IPR036179 | Immunoglobulin-like domain superfamily | Family | Homologous superfamily |