Influenza A H15N2 Hemagglutinin 重组蛋白 His (TMPY-04189)

Influenza A H15N2 (A/Australian shelduck/Western Australia/1756/1983) Hemagglutinin/HA1 Protein (His)

产品编号 TMPY-04189 Influenza A H15N2 (A/Australian shelduck/Western Australia/1756/1983) Hemagglutinin/HA1 Protein (His)

Influenza A H15N2 (A/Australian shelduck/Western Australia/1756/1983) Hemagglutinin/HA1 Protein (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 37.6 kDa and the accession number is Q2FCC6.

规格	价格	库存	数量
100 μg	¥ 4,460	5日内发货

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常见问题解答

问细胞实验中，抑制剂如何溶解？

答用 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。

问抑制剂是否需要灭菌？

答如果您使用 DMSO 配制：不建议灭菌，DMSO 本身具有极强的杀菌力，配制好的溶液就是无菌溶液。如果您确实担心的，可以放置 4℃ 冰箱过夜放置即可；依然有顾虑的话，需用有机系专用滤膜过滤。如果您使用水配制：可以用 0.22 μm 滤膜过滤灭菌。

问Tween-20 可以用 Tween-80 替代吗？

答不建议使用 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.

问期货产品没有纯度啊？这个纯度在哪里看

答期货产品的话，是没有纯度信息，也没有质检信息的。有了现货之后我们会进行质检，测出试剂的纯度和结构等相关信息，并且展示在官网的活性描述上方。

问化合物如何用于动物实验？如何确立剂量、给药方式等？

答同一个化合物对不同动物模型、不同疾病模型的用法不一样，建议根据实验目的，查询文献选择用法。常见的给药方式包括腹腔注射、灌胃等。由于首过效应，一般可以灌胃的也可以腹腔注射，可以腹腔注射的不一定适合灌胃。不同种属的给药剂量可以根据官网的表格换算。但仅供参考，实际应用中可能未必合适或者准确，尽量以具体某种动物给药剂量的参考文献为主。我们的化合物都可以进行细胞动物实验，但有些化合物还没有用于动物实验的文献，这种情况下，您可以尝试进行动物实验，但我们无法提供使用方式，也无法保证药效。

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	Influenza A H15N2 (A/Australian shelduck/Western Australia/1756/1983) Hemagglutinin/HA1 Protein (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 37.6 kDa and the accession number is Q2FCC6.
种属	H15N2
表达系统	HEK293 Cells
标签	C-His
蛋白编号	Q2FCC6
别名	Harvey rat sarcoma viral oncogene homolog
蛋白构建	A DNA sequence encoding the Influenza A virus (A/Australian shelduck/ Western Australia/1756/1983(H15N2)) hemagglutinin (ABB90704.1) (ABB90704.1) (Met1-Arg349), termed as HA1, was expressed with a C-terminal polyhistidine tag. Predicted N terminal: Asp 19
蛋白纯度	> 90 % as determined by SDS-PAGE
分子量	37.6 kDa (predicted); 51.6 kDa (reducing conditions)
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	The influenza viral Hemagglutinin (HA) protein is a homotrimer with a receptor binding pocket on the globular head of each monomer.HA has at least 18 different antigens. These subtypes are named H1 through H18.HA has two functions. Firstly, it allows the recognition of target vertebrate cells, accomplished through the binding to these cells' sialic acid-containing receptors. Secondly, once bound it facilitates the entry of the viral genome into the target cells by causing the fusion of the host endosomal membrane with the viral membrane. The influenza virus Hemagglutinin (HA) protein is translated in cells as a single protein, HA, or hemagglutinin precursor protein. For viral activation, hemagglutinin precursor protein (HA) must be cleaved by a trypsin-like serine endoprotease at a specific site, normally coded for by a single basic amino acid (usually arginine) between the HA1 and HA2 domains of the protein. After cleavage, the two disulfide-bonded protein domains produce the mature form of the protein subunits as a prerequisite for the conformational change necessary for fusion and hence viral infectivity.