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IL-4/BSF-1, Human, Recombinant
貨號：PCK031
價格：￥8802780968013880
規(guī)格：
10μg
- 10μg
- 50μg
- 500μg
- 1mg
產(chǎn)品概述
產(chǎn)品信息
| 別名 | BCGF, BCDF, B-cell Stimulating Factor (BSF-1) |
| 物種 | Human |
| 表達宿主 | E.coli |
| 序列信息 | MHKCDITLQEIIKTLNSLTEQKTLCTELTVTDIFAASKNTTEKETFCRAATVLRQFYSHHEKDTRCLGATAQQFHRHKQLIRFLKRLDRNLWGLAGLNSCPVKEANQSTLENFLERLKTIMREKYSKCSS with polyhistidine tag at the C-terminus. |
| 檢索號 | P05112.1 |
| 分子量 | 15.9 kDa |
| 表觀分子量 | 12 kDa |
| 標簽 | His-tag?at?the?C-terminus |
| 生物活性 | Measure by its ability to induce TF-1 cells proliferation. The ED50 for this effect is <0.2 ng/mL. The specific activity of recombinant human IL-4 is approximately >2.8 x 10^7 IU/mg. |
產(chǎn)品特性
| 純度 | >98% as determined by SDS-PAGE. Ni-NTA chromatography |
| 內毒素 | <0.1 EU per 1 μg of the protein by the LAL method. |
| 保存 | Lyophilized protein should be stored at -5~-20°C for 1 year. Upon reconstitution, store at 2-8°C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g.0.1% BSA,10%FBS,5%HSA or 5% trehalose solution), protein aliquots should be stored at -5~-20°C or -80°C for 3-6 months. |
| 運輸 | Ambient temperature or ice pack. |
| 制劑 | The protein was lyophilized from a 0.2 μm filtered solution containing 1X PBS, pH 8.0. |
| 復融 | It is recommended to reconstitute the lyophilized protein in sterile water to a concentration not less than 100 μg/mL.Do Not Vortex! Vigorous shaking may impair the biological activity of the protein. |
背景介紹
The interleukin 4 (IL4, IL-4) is a cytokine that induces differentiation of naive helper T cells (Th0 cells) to Th2 cells. Upon activation by IL-4, Th2 cells subsequently produce additional IL-4 in a positive feedback loop. The cell that initially produces IL-4, thus inducing Th2 differentiation, has not been identified, but recent studies suggest that basophils may be the effector cell. It is closely related and has functions similar to Interleukin 13.
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