背景描述 |
Interleukin-4 (IL-4) is a key cytokine produced by activated T cells, mast cells, basophils, neutrophils and eosinophils. IL-4 is critical for the development of Th2-mediated responses, which is related to allergy and asthma. It can also regulate B cell responses, including survival, cell proliferation and gene expression. IL-4 also plays fundamental role for B-cell stimulation, including induction of the IgE isotype switch. |
别称 |
interleukin 4, BCGF, BCDF, B-cell Stimulating Factor (BSF-1), IL4 |
蛋白编码 |
P07750 |
分子量 |
The protein has a calculated MW of 14.5 kDa.
The protein migrates as 14 kDa under reducing condition (SDS-PAGE analysis). |
表达系统 |
Escherichia coli |
纯度 |
>98% as determined by SDS-PAGE. |
生物活性 |
Measure by its ability to induce HT-2 cells proliferation.
The ED₅₀ for this effect is <1 ng/mL.
The specific activity of recombinant mouse IL-4 is approximately >1 x 10⁶ IU/mg. |
内毒素检测 |
<0.1 EU per 1 μg of the protein by the LAL method. |
蛋白序列 |
MHIHGCDKNHLREIIGILNEVTGEGTPCTEMDVPNVLTATKNTTESELVCRASKVLRIFYLKHGKTPCLKKNSSVLMELQRLFRAFRCLDSSISCTMNESKSTSLKDFLESLKSIMQMDYS with polyhistidine tag at the C-terminus. |
蛋白标签 |
His Tag (C-term) |
产品形式 |
The protein was lyophilized from a 0.2 µm filtered solution containing 1X PBS, pH 7.4. If you have any concerns or special requirements, please confirm with us. |
产品应用 |
Cell Culture |