1. 重组蛋白
  2. Cytokines and Growth Factors CD Antigens
  3. Interleukin & Receptors T Cell CD Proteins Macrophage CD Proteins Stem Cell CD Proteins Epithelial cell CD Proteins
  4. IL-6R IL-6R/CD126
  5. IL-6R alpha
  6. IL-6R alpha 蛋白, Human (Sf9)

IL-6R alpha 蛋白, Human (Sf9)

目录号: HY-P7377
COA 产品使用指南

IL-6R alpha 是 IL-6R 的 α 亚基,也被其他白细胞介素受体共享。IL-6R alpha 可作为 IL-6 激动剂,参与包括 JAK/STAT、MAPK 和 Akt 在内的信号通路。IL-6R alpha 由 468 个氨基酸 (M1-R468) 组成,存在两个 N 端纤维连接蛋白 III 型结构域 (113-217 a.a, 218-316 a.a) 和可溶性形式 (1-365 a.a)。可溶性 IL-6R (sIL-6R) 可结合 IL-6 和二聚体化的 gp130 实现反式信号传导,并具有在特定免疫组织表达的特异性。IL-6R alpha 蛋白, Human (L20-D358) 由 Sf9 昆虫细胞表达,序列全长为 339 个氨基酸。

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描述

IL-6R alpha is a subunit alpha of IL-6 receptors, also shared by other interleukin receptors. IL-6R alpha acts as IL-6 agonist and involves in JAK/STAT, MAPK, and Akt signaling pathway[1][2]. IL-6R alpha/CD126, Human consists of 468 amino acids (M1-R468) with two fibronectin type-III-like domains contained in the N-terminal part (113-217 a.a, 218-316 a.a), and a soluble form (1-365 a.a). Soluble IL-6R (sIL-6R) binds IL-6 and dimerized gp130 to achieve trans signaling, and exhibits a tissue expression property in some immune systems. IL-6R alpha Protein, Human (L20-D358) is soluble form and expressed by Sf9 insect cells with a full length of the sequence of 339 amino acids.

研究背景

IL-6 acts as both inflammatory factor and anti-inflammatory factor, fuels cancer progression through activating a series of downstream signalling cascade including gp130 (dimers), JAK/STAT, MAPK, and Akt[1][2].
IL-6R alpha (IL-6Rα) as a part of the receptor for interleukin 6, is a type I transmembrane glycoprotein, which forms a complex with the type I transmembrane signal transducer Glycoprotein 130 (CD130) and regulates the biological activity of IL-6 with a low affinity[3].
The sequence of amino acids in IL-6R alpha proteins of human is very different from mouse (54.07%) and rat (54.68%).
IL-6R alpha has 2 isoform including mIL6R (the longer one) or sIL6R (the shorter one):
The mIL6R is membrane-bound interleukin-6 receptor, has the potential to drive naive CD4+ T cells to the Th17 lineage, through 'cluster signaling' by dendritic cells[4].
The sIL-6R is soluble interleukin-6 receptor subunit, cleaved from IL-6R alpha (IL-6Rα) in activated CD4+ T cells by proteolysis, and serves as IL-6 agonist. sIL-6R binds membrane-bound IL6R and subunit IL6ST to activate regenerative and anti-inflammatory signal via IL-6 trans signaling and promotes pro-inflammatory properties of IL-6. The hydrolysis of IL-6R alpha is also called ectodomain shedding[1].
IL-6R alpha involves in regulating cell growth and differentiation, and plays an important role in regulation of immune response, acute-phase reactions and hematopoiesis[5].
However, IL-6R alpha shows tissue expression specificity in liver and some cells of the immune system, thus results a limitation of IL6 signaling[6].
It's worth noting that IL-6R alpha dysregulation is implicated in the pathogenesis of many diseases, such as multiple myeloma, autoimmune diseases, and prostate cancer[7][8].

体外研究
(In Vitro)

IL-6R alpha regulates IL-6 (10-6-103 ng/mL; 60 min at least) and triggers chemokinesis of tissue mast cells of rats[1].
sIL-6R (100 ng/mL; 48 h) shows no effect on adhesion molecules VCAM-1 and ICAM-1, but potently inhibits TNF-α induced VCAM-1 expression but not ICAM-1, by being combined with IL-6 (5 ng/mL) in U373-MG human astroglioma cells[2].
sIL-6R (100 ng/mL; 30 min) induce tyrosine phosphorylation of STAT-3 in U373-MG astroglioma cells and human astrocytes[2].
IL-6/sIL-6R complex (100 ng/mL; 24 h) induces NF-κB and STAT3 activation and Bcl-2 expression for human fibroblast-like synoviocytes in rheumatoid arthriti[3].

体内研究
(In Vivo)

IL-6R alpha exerts negative regulation on MAO-A activity to release angiogenic and invasive features of breast cancer cells from MAO-A inhibition[4].
sIL-6R (human), combinded with IL-6 (human), coexpressing in double-transgenic mice, inhibits mice growth and causes an extreme expansion of extramedullary hematopoietic progenitor cells compared with human IL-6 and human sIL-6R single-transgenic mice[5].
sIL-6R acts as a serum-binding protein for IL-6 and prolongs the plasma half life of IL-6[6].

生物活性

The ED50 is <50 ng/mL as measured by M1 cells, corresponding to a specific activity of >2 × 104 units/mg.

种属

Human

表达系统

Sf9 insect cells

标签

Tag Free

蛋白编号

P08887 (L20-D358)

基因 ID

3570  [NCBI]

中文名
人 IL-6Rα 蛋白(Sf9)
同用名
rHuIL-6 Receptor α; gp80; CD126
氨基酸序列

HHHHHHDDDDKLAPRRCPAQEVARGVLTSLPGDSVTLTCPGVEPEDNATVHWVLRKPAAGSHPSRWAGMGRRLLLRSVQLHDSGNYSCYRAGRPAGTVHLLVDVPPEEPQLSCFRKSPLSNVVCEWGPRSTPSLTTKAVLLVRKFQNSPAEDFQEPCQYSQESQKFSCQLAVPEGDSSFYIVSMCVASSVGSKFSKTQTFQGCGILQPDPPANITVTAVARNPRWLSVTWQDPHSWNSSFYRLRFELRYRAERSKTFTTWMVKDLQHHCVIHDAWSGLRHVVQLRAQEEFGQGEWSEWSPEAMGTPWTESRSPPAENEVSTPMQALTTNKDDDNILFRDSANATSLPVQD

分子量

Approximately 50 kDa

性状

Lyophilized powder.

组分

Lyophilized after extensive dialysis against PBS.

内毒素含量

<0.2 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

  • 重组蛋白稀释计算器

  • 比活力计算器

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-6R alpha Protein, Human (Sf9)
目录号:
HY-P7377
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