Recombinant Human β-NGF/NGFB Protein
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- 表达系统： E.coli
- 蛋白编码： P01138
- 应用性： Cell culture
| 别称 |
Beta-Nerve Growth Factor;Beta-NGF;NGF;NGFB
|
| 表达系统 |
E.coli
|
| 序列 |
Ser122-Ala241
|
| 蛋白编码 |
P01138
|
| 种属 |
Human
|
| 计算分子量 |
14.4 kDa
|
| 表观分子量 |
11 kDa
|
| 标签 |
C-His
|
| 生物活性 |
Measure by its ability to induce TF-1 cells proliferation. The ED50 for this effect is <0.7 ng/mL. The specific activity of recombinant human beta-NGF is > 1 x 106 IU/mg.
|
| 纯度 |
> 98 % as determined by reducing SDS-PAGE.
|
| 内毒素 |
< 0.1 EU per μg of the protein as determined by the LAL method.
|
| 保存条件 |
Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
|
| 运输条件 |
This product is provided as lyophilized powder which is shipped with ice packs.
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| 制剂 |
Lyophilized from sterile 20 mM sodium citrate, 0.2 M NaCl, pH 3.5.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| 复溶方法 |
Please refer to the printed manual for detailed information.
|
| 背景 |
Human β-Nerve Growth Factor (β-NGF) was initially isolated in the mouse submandibular gland. It is composed of three non-covalently linked subunits α; β; and γ; it exhibits all the biological activities ascribed to NGF. It is structurally related to BDNF; NT-3 and NT-4 and belongs to the cysteine-knot family of growth factors that assume stable dimeric structures. Β-NGF is a neurotrophic factor that signals through its receptor β-NGF; and plays a crucial role in the development and preservation of the sensory and sympathetic nervous systems. Β-NGF also acts as a growth and differentiation factor for B lymphocytes and enhances B-cell survival. These results suggest that β-NGF is a pleiotropic cytokine; which in addition to its neurotropic activities may have an important role in the regulation of the immune system. Human β-NGF shares 90% sequence similarity with mouse protein and shows cross-species reactivity.
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实验操作视频
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