IL-20R beta 蛋白, Human (sf9, His)

IL-20R beta Protein (IL20RB) is the beta subunit of IL-20 receptor, forms functional heterodimers with different subunit protein and involves in STAT3 activation pathway^[1]. The IL-20RA/IL-20RB dimer is a receptor for IL-19, IL-20 and IL-24. The IL-22RA1/IL-20RB dimer is a receptor for IL-20 and IL-24^[2]. IL-20R beta Protein is consists of 311 amino acids (M1-S311) with a transmembrane domain (234-254 a.a.). IL-20R beta Protein, Human (sf9, His) is produced in Sf9 insect cells with a C-Terminal His-tag.

IL-20Rβ（IL-12RB）也称为IL-20受体（IL-20RB）的β亚基，属于II型细胞因子受体家族。IL-20R beta 在皮肤和睾丸中广泛表达，表达水平最高，在银屑病皮肤中高表达^[1]。
IL-20R beta 与不同亚基蛋白形成功能性异二聚体。IL-20R beta 通过与 IL20RA 二聚化而充当 IL-19、IL-20 和 IL-24 的受体，但通过与 IL-22RA1 二聚化而充当 IL-20 和 IL-24 的受体^[2] 。
IL-20RB/IL-20RA 和 IL-20RB/IL-22RA1 通过结合 IL-20 发挥作用，然后通过 STAT3 刺激角质形成细胞系中的信号转导通路 ^[1]。
然而，银屑病皮损的角质形成细胞中 IL-20RB/IL-20RA 的表达均上调^[3]。
IL-20RB/IL-20RA 和 IL-20RB/IL-22RA1 与 IL-24 结合，诱导 Stat-1 和 Stat-3 转录因子快速激活，这似乎在细胞存活和增殖中发挥作用 ^[4]。
人IL-12β蛋白的氨基酸序列与小鼠有很大差异（64.64%）。

IL-2R beta involves in making up IL-2 II cytokine heterodimeric receptor type 1 (IL-2RB/IL-2RA) and type 2 (IL-2RB/IL-22RA1), thus binds to MDA-7 protein, encoded by melanoma differentiation-associated gene-7 (mda-7/IL24)^[5].
Both type 1 and type 2 IL-2R binds to MDA-7 protein and induces phosphorylation and nuclear translocation of STAT3 in melanoma cells, also induces dose-dependent cell death in melanoma tumor cells, results in up-regulation of BAX and subsequent apoptosis induction^[5].

Human

Sf9 insect cells

C-His

Q6UXL0-1 (D30-A230)

53833  [NCBI]

Approximately 23.9 kDa.

Greater than 90% as determined by reducing SDS-PAGE.

<1 EU/μg, determined by LAL method.

• [1]. Blumberg H, et al. Interleukin 20: discovery, receptor identification, and role in epidermal function. Cell. 2001 Jan 12;10 4(1):9-19.  [Content Brief]

  [2]. Wegenka UM. IL-20: biological functions mediated through two types of receptor complexes. Cytokine Growth Factor Rev. 2010 Oct;21(5):353-63.  [Content Brief]

  [3]. Sheikh F, et al. Cutting edge: IL-26 signals through a novel receptor complex composed of IL-20 receptor 1 and IL-10 receptor 2. J Immunol. 2004 Feb 15;172(4):2006-10.  [Content Brief]

  [4]. Wang M, et al. Interleukin-24 and its receptors. Immunology. 2005 Feb;114(2):166-70.  [Content Brief]

  [5]. Chada S, et al. Bystander activity of Ad-mda7: human MDA-7 protein kills melanoma cells via an IL-20 receptor-dependent but STAT3-independent mechanism. Mol Ther. 2004 Dec;10(6):1085-95.  [Content Brief]