1. 重组蛋白
  2. Cytokines and Growth Factors Animal-free Recombinant Proteins
  3. Chemokine & Receptors
  4. CXC Chemokines
  5. SDF-1/CXCL12
  6. Animal-Free SDF-1 alpha/CXCL12 蛋白, Mouse (His)

Animal-Free SDF-1 alpha/CXCL12 蛋白, Mouse (His)

目录号: HY-P700219AF
COA 产品使用指南

SDF-1 α/CXCL12 蛋白充当化学引诱剂,对 T 淋巴细胞和单核细胞(不包括中性粒细胞)具有特定活性。它激活 CXC 趋化因子受体 CXCR4,诱导细胞内钙离子快速短暂上升并促进趋化性。Animal-Free SDF-1 alpha/CXCL12 蛋白, Mouse (His) 是重组的 无动物源 SDF-1 α/CXCL12 蛋白,由 E. coli 表达,带有 C-His 标签。

无动物成分 (Animal-free) 重组蛋白,即生产过程中不使用或接触任何动物来源的材料和试剂,具有高一致性和稳定性。

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     可免费申领三个不同产品的试用装。

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规格 价格 是否有货 数量
10 μg ¥2900 In-stock
50 μg ¥8000 In-stock
100 μg   询价  

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  • 生物活性

  • 技术参数

  • 产品性质

  • 产品资料

描述

The SDF-1 α/CXCL12 protein acts as a chemoattractant with specific activity on T lymphocytes and monocytes (excluding neutrophils).It activates the CXC chemokine receptor CXCR4, inducing a rapid and transient rise in intracellular calcium ions and promoting chemotaxis.Animal-Free SDF-1 alpha/CXCL12 Protein, Mouse (His) is the recombinant mouse-derived animal-FreeSDF-1 alpha/CXCL12 protein, expressed by E.coli , with C-His labeled tag.

研究背景

SDF-1 α/CXCL12 蛋白可作为化学引诱剂,对 T 淋巴细胞和单核细胞(不包括中性粒细胞)具有特异性活性。它激活 CXC 趋化因子受体 CXCR4,诱导细胞内钙离子快速短暂上升并促进趋化性。此外,它还与非典型趋化因子受体 ACKR3 结合,激活 β-arrestin 通路并充当 SDF-1 的清道夫受体。此外,它与整合素的变构位点(位点 2)结合,以不依赖于 CXCR4 的方式激活 ITGAV:ITGB3、ITGA4:ITGB1 和 ITGA5:ITGB1。它通过 LYN 激酶充当单核细胞迁移的正调节剂和单核细胞粘附的负调节剂,通过 CXCR4 和 ACKR3 刺激单核细胞和 T 淋巴细胞的迁移,同时减少单核细胞对 ICAM-1 涂层表面的粘附。SDF1A/CXCR4 信号轴通过 LYN 激酶抑制 β2 整合素 LFA-1 介导的单核细胞与 ICAM-1 的粘附。它在心肌梗塞后发挥保护作用,并诱导ACKR3下调和内化。至关重要的是,SDF-1 alpha/CXCL12 在胚胎发育过程中不可或缺,参与 B 细胞淋巴细胞生成、骨髓中的骨髓生成和心室间隔形成。在 IL7 存在的情况下,它会刺激骨髓来源的 B 细胞祖细胞的增殖,以及基质细胞依赖性前 B 细胞的生长。以单体或同型二聚体形式存在,平衡受到非酸性 pH、多价阴离子的存在以及与 CXCR4 或肝素的结合的影响。单体形式对于完整的趋化活性和抵抗缺血/再灌注损伤至关重要,而二聚体形式作为 CXCR4 的部分激动剂,刺激 Ca2+ 动员而没有趋化活性,而是作为选择性拮抗剂,阻断单体形式诱导的趋化性。它通过变构位点(位点 2)与 ACKR3、整合素亚基 ITGB3 的 N 末端相互作用,并通过 Link 结构域与 TNFAIP6 相互作用。

生物活性

Measure by its ability to chemoattract BaF3 cells transfected with human CXCR4. The ED50 for this effect is <0.5 ng/mL.

种属

Mouse

表达系统

E. coli

标签

C-His

蛋白编号

P40224 (G21-K89)

基因 ID
蛋白结构
N-term
CXCL12 (G21-K89)
Accession # P40224
His
C-term
同用名
CXCL12; Stromal cell-derived factor 1; SDF-1; 12-O-tetradecanoylphorbol 13-acetate repressed protein 1; TPAR1; C-X-C motif chemokine 12; Pre-B cell growth-stimulating factor; PBSF; Thymic lymphoma cell-stimulating factor; TLSF; Sdf1
氨基酸序列

MGKPVSLSYRCPCRFFESHIARANVKHLKILNTPNCALQIVARLKNNNRQVCIDPKLKWIQEYLEKALNK

分子量

Approximately 8.97 kDa

纯度

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

性状

无菌粉末.

组分

Lyophilized from a solution containing 1X PBS, pH 7.4, trehalose.

内毒素含量

<0.1 EU per 1 μg of the protein by the 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 for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). 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
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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产品名称:
Animal-Free SDF-1 alpha/CXCL12 Protein, Mouse (His)
目录号:
HY-P700219AF
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