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  4. IL-4 Receptor IL-4R alpha/CD124
  5. IL-4R alpha
  6. IL-4R alpha/CD124 蛋白, Human (HEK293, mFc)

IL-4R alpha/CD124 蛋白, Human (HEK293, mFc)

目录号: HY-P70325
COA 产品使用指南

IL-4R alpha 是 IL-4 和 IL-13 受体共有的 α 亚基,最初发现于白细胞中。IL-4R alpha 耦连于 JAK1/2/3-STAT6 通路,参与促进 Th2 分化。IL-4R alpha/CD124, Human 由 825 个氨基酸 (M1-S825) 组成,存在跨膜结构域 (233-256 a.a) 和可溶性形式 (1-227 a.a)。可溶性 IL-4R (sIL-4R) 可抑制 IL-4 介导的细胞增殖和 T 细胞对 IL-5 的上调。IL-4R alpha/CD124, Human (M26-Q231) 在 HEK293 细胞中产生,带有 C- 末端 mFc 标记。

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10 μg ¥1700 In-stock
50 μg ¥5050 In-stock
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描述

IL-4R alpha is a subunit alpha shared by IL-4 and IL-13 receptors, found in leukocytes originally. IL-4R alpha couples to the JAK1/2/3-STAT6 pathway and involves in promoting Th2 differentiation[1]. IL-4R alpha/CD124, Human consists of 825 amino acids (M1-S825) with a transmembrane domain (233-256 a.a) and a soluble form (1-227 a.a). Soluble IL-4R (sIL-4R) inhibits IL4-mediated cell proliferation and IL-5 up-regulation by T-cells[1]. IL-4R alpha/CD124, Human (M26-Q231) is produced in HEK293 cells with a C-Terminal mFc-tag.

研究背景

Interleukin-4R alpha (IL-4Rα), also known as CD124 and B cell stimulatory factor (BSF) receptor, is one of the anti-inflammatory cytokines, and highly expressed in activated T-cells[1].
IL-4R alpha participates in forming two interleukin receptors in different cell types. For the type I receptor, depends on IL-4R alpha binding IL-4 to recruit IL-2R gamma chain in immune cells. IL-2R gamma is the common subunit for a variety of interleukin receptors, involved in the stimulation of neutrophil phagocytosis by IL-15. For the type II receptor, depends on IL-4R alpha binding IL-4 to recruit IL-13R alpha 1 chain. IL-13R alpha 1 is an alternat accessory protein to the common cytokine receptor gamma chain in non-immune cells[2][3].
The sequence of amino acids in IL-4R alpha proteins in human is very different from mouse (53.35%), or rat (52.82%).
IL-4 R alpha generates a soluble form by alternate splicing or proteolysis, maintaining ligand binding properties and inhibiting IL-4 bioactivity. IL-4 R alpha soluble isoform 1 can be produced by proteolytic cleavage at the cell surface (shedding) by a metalloproteinase[4].
IL-4 R alpha plays an important role in Th2-biased immune responses, alternative macrophage activation, mucosal immunity, allergic inflammation, tumor progression, and atherogenesis[5].

体外研究
(In Vitro)

Interleukin-4Rα (IL-4Rα) shows promotion of Th2 cytokine and IgE response without hIL-4, and fails to expel N. brasiliensis worms in transgenic mice (hIL-4RαTg/mIL-4Rα-/-) infected with Nippostrongylus brasiliensis[8].

体内研究
(In Vivo)

Interleukin-4Rα (IL-4Rα) contains a immunoreceptor tyrosine-based inhibitory motifs (ITIM), plays a functional role in the regulation of IL-4-induced proliferation, ablation of ITIM results in a hyperproliferative response to IL-4 stimulation in 32D/IRS-2 cells expressing mutant IL-4R α-chains (△712 and Y713F)[6].
Recombinant sIL-4R (10 ng/mL; 3 d) inhibits IL-4-mediated proliferation and IL-5 upregulation by T cells[7].

生物活性

The affinity constant between IL-4-His and IL-4RA-mFc is 0.12 nM.

种属

Human

表达系统

HEK293

标签

C-mFc

蛋白编号

P24394 (M26-Q231)

基因 ID

3566  [NCBI]

中文名
重组人 (HEK293, mFc) 白介素-4 受体 alpha/CD124
同用名
rHuInterleukin-4 receptor subunit alpha/IL-4 RA, mFc; Interleukin-4 receptor subunit alpha; IL-4 receptor subunit alpha; IL-4R subunit alpha; IL-4R-alpha; IL-4RA; CD124; IL-4-binding protein; IL4-BP; IL4R; IL4RA
氨基酸序列

MKVLQEPTCVSDYMSISTCEWKMNGPTNCSTELRLLYQLVFLLSEAHTCIPENNGGAGCVCHLLMDDVVSADNYTLDLWAGQQLLWKGSFKPSEHVKPRAPGNLTVHTNVSDTLLLTWSNPYPPDNYLYNHLTYAVNIWSENDPADFRIYNVTYLEPSLRIAASTLKSGISYRARVRAWAQCYNTTWSEWSPSTKWHNSYREPFEQ

分子量

65-86 kDa

纯度

Greater than 95% as determined by reducing SDS-PAGE.

性状

Lyophilized powder.

组分

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

内毒素含量

<1 EU/μg, determined by LAL method.

复溶方法

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

保存条件 & 期限

Stored at -20°C. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer. It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

运输条件

Room temperature in continental US;may vary elsewhere.

文件资料
参考文献
  • 复溶计算器

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

The specific active calculator equation

Specific Active (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Active (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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产品名称:
IL-4R alpha/CD124 Protein, Human (HEK293, mFc)
目录号:
HY-P70325
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