1. 重组蛋白
  2. Cytokines and Growth Factors CD Antigens
  3. Interleukin & Receptors T Cell CD Proteins B Cell CD Proteins NK Cell CD Proteins
  4. IL-2 Receptor CD25/IL-2R alpha
  5. IL-2R alpha
  6. IL-2R alpha/CD25 蛋白, Human (HEK293, Fc)

IL-2R alpha/CD25 蛋白, Human (HEK293, Fc)

目录号: HY-P7374
COA 产品使用指南

IL-2R alpha (CD25) 是高亲和力 IL-2 受体的重要组成部分。IL-2R alpha 增强 IL-2 与其受体复合物的结合,从而调节 T 细胞生长和其他淋巴功能。IL-2R alpha/CD25 蛋白, Human (HEK293, Fc) 是一种重组人 IL-2R alpha 蛋白,在 HEK293 细胞中表达,由 192 个氨基酸组成 (E22-C213),C 末端带有hFc 标签。

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规格 价格 是否有货 数量
10 μg ¥2100 In-stock
50 μg   询价  
100 μg   询价  

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描述

IL-2R alpha (CD25) is an essential component of high-affinity IL-2 receptors. IL-2R alpha enhances binding of IL-2 to its receptor complex so that regulates T cell growth and other lymphoid functions[1][2]. IL-2R alpha/CD25 Protein, Human (HEK293, Fc) is a recombinant human IL-2R alpha protein with an hFc tag at the C-terminus and is expressed in HEK293 cells. It consists of 192 amino acids (E22-C213).

研究背景

IL-2R alpha (CD25) is a type I membrane protein. IL-2R alpha is expressed in peripheral activated T and B cells, triple-negative thymocytes, and bone marrow pre-B cells. In high tumor regulatory T (Treg) cells, IL-2R alpha is highly expressed and is a potential target for Treg deletion. The expression of IL-2R alpha is undetectable on resting T cells[1][2][3].
The sequence of amino acids in IL-2R alpha from different species is very different (less than 85% similarity among human, rat and mouse).
IL-2R alpha is an essential component of high-affinity IL-2 receptors and has no signal-transducing activity per se. IL-2R alpha functions through enhancing binding of IL-2 to its receptor complex and acts as a positive feedback regulator. IL-2 is a principal growth factor for T lymphocytes and plays an important role in T cell immune response. IL-2R alpha transcription is regulated by three positive regulatory regions (PRRs): PRRI, PRRII and PRRIII. PRRIII is an IL-2 response element[1][2].
IL-2R alpha regulates T cell growth, augments lymphocyte activation and proliferation. IL-2R alpha is involved in preventing type 1 diabetes and cancers[1][2][4].

生物活性

5 µg/mL (100 µL/well) of immoblized recombinant human IL-2 can bind human CD25/IL-2Rα-Fc with a linear range of 1.2-11 ng/mL.

种属

Human

表达系统

HEK293

标签

C-hFc

蛋白编号

P01589 (E22-C213)

基因 ID

3559  [NCBI]

中文名
重组人 IL-2R alpha/CD25 蛋白 (HEK293, Fc)
同用名
rHuIL-2R α/CD25, Fc Chimera; TAC antigen; IL-2-RA; IL-2 R alpha; IL-2Rα; IL2RA
氨基酸序列

ELCDDDPPEIPHATFKAMAYKEGTMLNCECKRGFRRIKSGSLYMLCTGNSSHSSWDNQCQCTSSATRNTTKQVTPQPEEQKERKTTEMQSPMQPVDQASLPGHCREPPPWENEATERIYHFVVGQMVYYQCVQGYRALHRGPAESVCKMTHGKTRWTQPQLICTGEMETSQFPGEEKPQASPEGRPESETSC

分子量

65-75 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 or PBS.

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
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • 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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IL-2R alpha/CD25 Protein, Human (HEK293, Fc)
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HY-P7374
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