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Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc)

产品编号 TMPY-02346

Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 47.23 kD and the accession number is P07351.

Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc)

Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc)

产品编号 TMPY-02346
Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 47.23 kD and the accession number is P07351.
规格价格库存数量
100 μg
¥ 3,430
5日内发货
大包装 & 定制
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实验操作小课堂
常见问题解答
动物不能耐受 DMSO,给药时 DMSO量应该如何控制?
对于普通的老鼠,DMSO 的浓度应控制在 10% 以下,对于裸鼠、转基因小鼠、耐受性弱的老鼠等,DMSO 浓度需控制在2%以下。对于首次操作的抑制剂,建议先做溶剂阴性对照,确认溶解对动物无非特异性影响。
产品溶解需要超声吗?如果没有超声仪怎么办?
超声可以加快粉末的溶解速度,如果您的化合物溶解不了,建议您尝试超声。如果您没有超声仪,建议您选择较低母液浓度,或者较少粉末量,尝试溶解。
抑制剂加 DMSO 配成母液之后,能否放在常温的环境保存1周?
不建议这么做,母液配置好分装保存,建议存于 -20℃ 或 -80℃,尽量避免反复冻融。如果您订购的规格很大,可以考虑分装粉末保存,固体粉末是比较稳定的,-20℃ 可以保存三年。
准备进行动物实验,收到大包装粉末后,如何分装溶解?
根据配制出来的溶液是不是澄清的确定一次性能配多少:如果配制出来是澄清溶液,可以一次性多配制一些,储存于4度冰箱,大概一周配一次,放久了可能会失效;如果配制出来是混悬液,建议每次使用的时候都现配现用。
细胞实验中需要加多少抑制剂?
通常建议您参考同模型实验发表的文献报道;除参考文献报道以外,还需要通过预实验做“剂量-效应曲线”确定最佳作用浓度(浓度梯度);通过“时间-效应曲线”确定最佳孵育时间(处理时间梯度)。另外,抑制剂的使用量受多种因素影响,包括抑制对象的可接触性、细胞通透性、孵育时间、细胞种类等等。我们建议通过检索文献确定使用抑制剂的起始浓度。 如果有报道的 Ki 值或 IC50 值,可以采用其 5-10 倍的量开始尝试以达到抑制酶活性的最佳效果。 如果抑制剂的 Ki 值或 IC50 值未知,则需要在更广泛的范围尝试抑制剂的使用浓度,并采用 Michaelis-Menten 动力学计算 Ki 值。 一般设立溶解抑制剂时所采用的溶剂作为对照,以排除溶剂的非特异性影响。
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产品信息

生物活性
Activity testing is in progress. It is theoretically active, but we cannot guarantee it. If you require protein activity, we recommend choosing the eukaryotic expression version first.
产品描述
Interferon alpha 4/IFNA4 Protein, Mouse, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 47.23 kD and the accession number is P07351.
种属
Mouse
表达系统
HEK293 Cells
标签N-hFc
蛋白编号P07351
别名
干扰素,RP23-139P14.30-001,MGC143607,interferon, α4,interferon, alpha 4,Ifa4
蛋白构建
A DNA sequence encoding the extracellular domain of mouse IFNA4 (NP_034634.1) (Cys 25-Glu 186) was fused with the Fc region of human IgG1 at the N-terminus. Predicted N terminal: Glu
蛋白纯度
≥ 95% as determined by SDS-PAGE. ≥ 90% as determined by SEC-HPLC.
分子量47.23 kDa (predicted); 53.1 kDa (reducing contition, due to glycosylation)
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
Interferon, alpha 4 (IFNA4) belongs to the alpha/beta interferon family. Two variants of IFNA4 (IFNA4a and IFNA4b) are known, which differ from each other by changes in their coding regions at nucleotide positions 220 and 410 and can be distinguished by selective restriction enzyme analysis. Interferons are produced by macrophages, IFN-alpha has antiviral activities. Interferon stimulates the production of two enzymes: a protein kinase and an oligoadenylate synthetase. IFN-alpha, the first cytokine to be produced by recombinant DNA technology, has emerged as an important regulator of growth and differentiation, affecting cellular communication and signal transduction pathways as well as immunological control. Originally discovered as an antiviral substance, the efficacy of IFN-alpha in malignant, viral, immunological, angiogenic, inflammatory, and fibrotic diseases suggests a spectrum of interrelated pathophysiologies. IFN-alpha emerged as a prototypic tumor suppressor protein that represses the clinical tumorigenic phenotype in some malignancies capable of differentiation.

参考文献

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