| Nomenclature | Interleukin-2 receptor | Interleukin-4 receptor type I | Interleukin-4 receptor type II | Interleukin-7 receptor | Interleukin-9 receptor |
| Subunits | Interleukin-2 receptor α subunit (Ligand-binding subunit), Interleukin-2 receptor β subunit (Ligand-binding subunit), Interleukin-2 receptor γ subunit (Other subunit) | Interleukin 4 receptor (Ligand-binding subunit), Interleukin-2 receptor γ subunit (Other subunit) | Interleukin 4 receptor (Ligand-binding subunit), Interleukin 13 receptor, α1 (Other subunit) | Interleukin 7 receptor (Ligand-binding subunit), Interleukin-2 receptor γ subunit (Other subunit) | Interleukin 9 receptor (Ligand-binding subunit), Interleukin-2 receptor γ subunit (Other subunit) |
| Endogenous agonists | IL-2 (IL2, P60568) | IL-4 (IL4, P05112) | IL-13 (IL13, P35225), IL-4 (IL4, P05112) | IL-7 (IL7, P13232) | IL-9 (IL9, P15248) |
| Endogenous antagonists | IL-1 receptor antagonist (IL1RN, P18510) | – | – | – | – |
| Selective antagonists | AF12198 1, Ro264550 3 | – | – | – | – |
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