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IL-3 Protein, Human, Recombinant (His)

产品编号 TMPY-00095

IL-3 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 16.5 kDa and the accession number is P08700.

IL-3 Protein, Human, Recombinant (His)

IL-3 Protein, Human, Recombinant (His)

产品编号 TMPY-00095
IL-3 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 16.5 kDa and the accession number is P08700.
规格价格库存数量
100 μg
¥ 3,820
现货
200 μg
¥ 6,240
5日内发货
500 μg
¥ 11,880
5日内发货
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实验操作小课堂
常见问题解答
抑制剂母液的储存方式?
母液配置完成后,一般储存于 -80℃,可以存 1 年以上。建议多分装几管,避免反复冻融,常用的存于 4 度,可放一周以上。
得到的杀死细胞的 IC50 与网页上 IC50 差距较大怎么办?
您所测试的IC50是指细胞的增殖抑制实验(半抑制率),细胞增殖抑制实验 IC50值,和网页上的靶点IC50其实是不同的意义。文献里和网页上 IC50其实往往是指对于靶点无细胞实验的抑制率,这样的实验一般是通过激酶或者蛋白纯化实验做出来的,nM 级别的浓度比较常见,但是细胞的增殖抑制实验 IC50 是指细胞的半致死率,同时牵涉到细胞的代谢以及渗透,一般浓度会高一些。 另外,同一个化合物对不同细胞模型的效果也是不同的,建议尝试增加孵育量、延长孵育时间。
如果低于说明书给出的最高溶解度情况下,产品仍未溶解怎么办?
建议您使用一些辅助溶解方法,如水浴加热至 45℃ 或用超声震荡,加速粉末溶解。
Tween-20 可以用 Tween-80 替代吗?
不建议使用 Tween-20。相较于 Tween-20,Tween-80 的耐受性更好,Tween-80已被用作评估实验药物和毒物的行为影响的工具,且没有明显的副作用。 参考文献:Castro CA, Hogan JB, Benson KA, Shehata CW, Landauer MR. Behavioral effects of vehicles: DMSO, ethanol, Tween-20, Tween-80, and emulphor-620. Pharmacol Biochem Behav. 1995 Apr;50(4):521-6.
细胞实验中,抑制剂如何溶解?
用 DMSO 配置较高浓度母液,母液存于 -80℃,建议多分装几管,一周内使用的存于 4℃,避免反复冻融。实验时用 pbs、生理盐水、培养基、水这些稀释,细胞实验DMSO的终浓度不超过 0.1%。如果超过 0.1%,则需要在做预试验的时候,先进行溶剂阴性对照实验,排除溶剂对细胞的影响。
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产品信息

生物活性
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 0.5-2.5ng/mL.
IL-3 Protein, Human, Recombinant (His)
产品描述
IL-3 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 16.5 kDa and the accession number is P08700.
种属
Human
表达系统
HEK293 Cells
标签C-His
蛋白编号P08700
别名
MULTI-CSF,MCGF,Interleukin-3,interleukin 3,IL-3
蛋白构建
A DNA sequence encoding the human IL3 (NP_000579.2) (Met1-Phe152) was expressed with a polyhistidine tag at the C-terminus. Predicted N terminal: Ala 20
蛋白纯度
> 95 % as determined by SDS-PAGE.
IL-3 Protein, Human, Recombinant (His)
分子量16.5 kDa (predicted)
内毒素< 1.0 EU/μg of the protein as determined by the LAL method.
缓冲液Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization.
复溶方法
A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.
存储
It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
运输方式In general, Lyophilized powders are shipping with blue ice.
研究背景
IL3 (interleukin 3), also known as IL-3, is a potent growth-promoting cytokine that belongs to the IL-3 family. IL3/IL-3 also belongs to the group of interleukins. Interleukins are produced by a wide variety of body cells. The function of the immune system depends in a large part on interleukins, and rare deficiencies of a number of them have been described, all featuring autoimmune diseases or immune deficiency. The majority of interleukins are synthesized by helper CD4+ T lymphocytes, as well as through monocytes, macrophages, and endothelial cells. They promote the development and differentiation of T, B, and hematopoietic cells. IL3/IL-3 is capable of supporting the proliferation of a broad range of hematopoietic cell types. It is involved in a variety of cell activities such as cell growth, differentiation, and apoptosis. IL3/IL-3 has been shown to also possess neurotrophic activity, and it may be associated with neurologic disorders.

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