2. 重组蛋白
  3. Immune Checkpoint Proteins CD Antigens
  4. Inhibitory Checkpoint Molecules T Cell CD Proteins Macrophage CD Proteins Dendritic Cell CD Proteins
  5. CTLA-4 CTLA-4
  6. CTLA-4 蛋白, Human (HEK293)

CTLA-4 蛋白, Human (HEK293)

目录号: HY-P72959
COA 产品使用指南

CTLA-4蛋白是一种关键的抑制性受体，也是协调免疫调节的T细胞反应的主要负调节因子。其独特的特性是与 CD28 相比，其对 B7 配体 (CD80/CD86) 的亲和力显着增加。CTLA-4 蛋白, Human (HEK293) 是重组的 CTLA-4 蛋白，由 HEK293 表达，不带标签。CTLA-4 蛋白, Human (HEK293) 全长 126 个氨基酸，分子量约为 ~13.5 kDa。

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规格 价格 是否有货 数量
10 μg ￥1000 In-stock
50 μg ￥2650 In-stock
100 μg ￥4200 In-stock
> 100 μg   询价  

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描述

The CTLA-4 protein is a key inhibitory receptor and a major negative regulator of T cell responses in coordination of immune regulation. Its unique property is its significantly increased affinity for B7 ligands (CD80/CD86) compared with CD28. CTLA-4 Protein, Human (HEK293) is the recombinant human-derived CTLA-4 protein, expressed by HEK293 , with tag free. The total length of CTLA-4 Protein, Human (HEK293) is 126 a.a., with molecular weight of ~13.5 kDa.
研究背景

GMP CTLA-4 是一种关键的抑制性受体，是在免疫调节的复杂框架内协调 T 细胞反应的主要负调节因子。这种调节功能源于 GMP CTLA-4 的独特特性，与同源刺激辅助受体 CD28 相比，其对其天然 B7 家族配体 CD80 和 CD86 的亲和力显着增强。这种结合亲和力的显着差异使 GMP CTLA-4 能够与 CD80/B7-1 和 CD86/B7.2 竞争性结合，对 T 细胞激活产生抑制影响并微调免疫反应。GMP CTLA-4 的同二聚体结构通过二硫键错综复杂地连接，进一步强调了其在免疫调节中作为分子哨兵的作用。此外，GMP CTLA-4 与 ICOSLG 相互作用，有助于其在免疫检查点通路中的多方面参与。
种属

Human
表达系统

HEK293
标签

Tag Free
蛋白编号

P16410 (K36-D161)
基因 ID
蛋白结构
N-term
CTLA-4 (K36-D161)
Accession # P16410
C-term
同用名
Cytotoxic T-lymphocyte associated protein 4; CTLA4; CD152
氨基酸序列

MACLGFQRHKAQLNLATRTWPCTLLFFLLFIPVFCKAMHVAQPAVVLASSRGIASFVCEYASPGKATEVRVTVLRQADSQVTEVCAATYMMGNELTFLDDSICTGTSSGNQVNLTIQGLRAMDTGLYICKVELMYPPPYYLGIGNGTQIYVIDPEPCPDSD

分子量

Approximately 13.5 kDa
纯度

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

溶液.
组分

Supplied as 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

N/A.
保存条件 & 期限

Stored at -80°C for 1 year. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
运输条件

Shipping with dry ice.
文件资料

COA (209 KB)

产品使用指南 (1213 KB)
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 activity calculator equation

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

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

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