| IPR001879 | GPCR, family 2, extracellular hormone receptor domain | Domain |
| IPR017983 | GPCR, family 2, secretin-like, conserved site | Conserved Site |
| IPR050332 | G-protein coupled receptor 2 | Family |
| IPR036445 | GPCR family 2, extracellular hormone receptor domain superfamily | Homologous Superfamily |
| IPR001571 | GPCR, family 2, vasoactive intestinal peptide receptor | Family |
| IPR000832 | GPCR, family 2, secretin-like | Family |
| IPR017981 | GPCR, family 2-like, 7TM | Domain |
| IPR001771 | GPCR, family 2, vasoactive intestinal peptide receptor 1 | Family |
| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |
| IPR050160 | Major Histocompatibility Complex/Immunoglobulin | Family |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR015707 | Beta-2-Microglobulin | Family |
| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR050208 | Antigen-presenting and immune regulatory MHC class I-related | Family |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR010579 | MHC class I, alpha chain, C-terminal | Domain |
| IPR011161 | MHC class I-like antigen recognition-like | Domain |
| IPR011162 | MHC classes I/II-like antigen recognition protein | Homologous Superfamily |
| IPR001039 | MHC class I alpha chain, alpha1 alpha2 domains | Domain |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR037055 | MHC class I-like antigen recognition-like superfamily | Homologous Superfamily |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |