| IPR036179 | Immunoglobulin-like domain superfamily | Homologous Superfamily |
| IPR050380 | Immune Recognition and Response Modulators | Family |
| IPR003597 | Immunoglobulin C1-set | Domain |
| IPR013783 | Immunoglobulin-like fold | Homologous Superfamily |
| IPR007110 | Immunoglobulin-like domain | Domain |
| IPR003006 | Immunoglobulin/major histocompatibility complex, conserved site | Conserved Site |
| IPR050658 | IL-2_family_cytokines | Unknown |
| IPR000779 | Interleukin-2 | Family |
| IPR030477 | Interleukin-2, conserved site | Conserved Site |
| IPR009079 | Four-helical cytokine-like, core | Homologous Superfamily |
I [auth J] | IPR024110 | Immunoglobulin J chain | Family |
L [auth M] | IPR017448 | SRCR-like_dom | Unknown |
L [auth M] | IPR001190 | SRCR domain | Domain |
L [auth M] | IPR052291 | SRCR_domain-containing | Unknown |
L [auth M] | IPR036772 | SRCR-like domain superfamily | Homologous Superfamily |
L [auth M] | IPR050658 | IL-2_family_cytokines | Unknown |
L [auth M] | IPR000779 | Interleukin-2 | Family |
L [auth M] | IPR030477 | Interleukin-2, conserved site | Conserved Site |
L [auth M] | IPR009079 | Four-helical cytokine-like, core | Homologous Superfamily |