Recombinant Human TGF beta 2 protein(His Tag)
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- 表达系统： E.coli
- 蛋白编码： P61812
- 应用性： Cell culture
| 别称 |
G-TSF;LDS4;TGFB2
|
| 表达系统 |
E.coli
|
| 序列 |
Ala 303-Ser 414
|
| 蛋白编码 |
P61812
|
| 种属 |
Human
|
| 计算分子量 |
13.7 kDa
|
| 表观分子量 |
15 kDa
|
| 标签 |
C-His
|
| 生物活性 |
Measure by its ability to inhibit IL-4-induce proliferation in HT-2 cells.The ED50 for this effect is <0.2 ng/mL.The specific activity of recombinant human TGF beta 2 is > 5 x 106 IU/mg.
|
| 纯度 |
> 98 % as determined by reducing SDS-PAGE.
|
| 内毒素 |
< 0.01 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.
|
| 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 |
TGF-beta 2 (transforming growth factor beta 2) is one of three closely related mammalian members of the large TGF-beta superfamily that share a characteristic cysteine knot structure. TGF-beta 1, -2 and -3 are highly pleiotropic cytokines proposed to act as cellular switches that regulate processes such as immune function, proliferation and epithelial-mesenchymal transition. Each TGF-beta isoform has some non-redundant functions; for TGF-beta 2, mice with targeted deletion show defects in development of cardiac, lung, craniofacial, limb, eye, ear and urogenital systems. Covalent linkage of LAP to one of three latent TGF-beta binding proteins (LTBPs) creates a large latent complex that may interact with the extracellular matrix. TGF-beta is activated from latency by pathways that include actions of the protease plasmin, matrix metalloproteases, thrombospondin 1 and a subset of integrins. TGF-beta 2 signaling begins with binding to a complex of the accessory receptor betaglycan (also known as TGF-beta RIII) and a type II ser/thr kinase receptor termed TGF-beta RII. This receptor then phosphorylates and activates another ser/thr kinase receptor, TGF-beta RI (also called activin receptor-like kinase (ALK) -5), or alternatively, ALK-1. The whole complex phosphorylates and activates Smad proteins that regulate transcription. Use of other signaling pathways that are Smad-independent allows for disparate actions observed in response to TGF-beta in different contexts.
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实验操作视频
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