IL21R

该基因编码的蛋白质是白细胞介素21（IL21）的细胞因子受体它属于I型细胞因子受体，已被证明与普通γ链形成异二聚体受体复合物，这是白细胞介素2、4、7、9和15受体也共享的受体亚单位。该受体介导IL21的促生长信号，对T细胞、B细胞和NK细胞的增殖和分化具有重要作用该受体的配体结合导致多种下游信号分子的激活，包括jak1、jak3、stat1和stat3。对小鼠中一个类似基因的敲除研究表明，该基因在调节免疫球蛋白生成中起作用已经描述了三种选择性剪接的转录变体[由RefSeq提供，2010年7月]
The protein encoded by this gene is a cytokine receptor for interleukin 21 (IL21). It belongs to the type I cytokine receptors, and has been shown to form a heterodimeric receptor complex with the common gamma-chain, a receptor subunit also shared by the receptors for interleukin 2, 4, 7, 9, and 15. This receptor transduces the growth promoting signal of IL21, and is important for the proliferation and differentiation of T cells, B cells, and natural killer (NK) cells. The ligand binding of this receptor leads to the activation of multiple downstream signaling molecules, including JAK1, JAK3, STAT1, and STAT3. Knockout studies of a similar gene in mouse suggest a role for this gene in regulating immunoglobulin production. Three alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2010]