IL-2 Receptor

IL-2R (Interleukin-2 receptor) is the receptor for Interleukin-2. IL-2R has three component peptides, α, β, γ. And they have different affinities for IL-2: low-affinity IL-2Rα, intermediate-affinity IL-2Rβγ and high-affinity IL-2Rαβγ[1]. IL-2R mediates T cell immune responses, such as stimulating T cell proliferation and activating lymphokine-activated killer cells[2]. IL-2R also mediates IL-2 internalization and signal transduction, such as cell proliferation or differentiation[3].