Influenza A H5N1 Hemagglutinin 重组蛋白 His (TMPY-01510)

Influenza A H5N1 (A/Common magpie/Hong Kong/2256/2006) Hemagglutinin/HA1 Protein (His)

产品编号 TMPY-01510 Influenza A H5N1 (A/Common magpie/Hong Kong/2256/2006) Hemagglutinin/HA1 Protein (His)

Influenza A H5N1 (A/Common magpie/Hong Kong/2256/2006) Hemagglutinin/HA1 Protein (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 38 kDa and the accession number is A0FFY5.

规格	价格	库存	数量
100 μg	¥ 4,460	5日内发货

大包装 & 定制

加入购物车

TargetMol 的所有产品仅用作科学研究或药证申报，不能被用于人体，我们不向个人提供产品和服务。请您遵守承诺用途，不得违反法律法规规定用于任何其他用途。

常见问题解答

问重组蛋白有吗？

答您需要什么种属的蛋白呢，对表达系统和标签有要求吗，用于什么实验？

问如何将冻干的重组蛋白配置为储备液？

答在打开盖⼦之前，先使用 10000-12000 rpm 的转速进行离心，20-30 秒，将附着在管盖或管壁上的冻⼲粉收集到管底，以避免损失。大多数蛋白可通过加入无菌蒸馏水来重新溶解。如果需要除水以外的其他稀释剂，产品 COA 中会对其进行说明。一般储备液浓度建议不要低于 100 μg/mL，分装储存避免反复冻融。

问为什么某些重组蛋白溶液中还需要添加载体蛋白？

答载体蛋白通常被用于提高蛋白的稳定性，防止蛋白在冷冻或解冻过程中粘附在管壁上。塑料管对蛋白有一定的吸附能力，这可能导致蛋白和管壁之间难以分离，导致溶液中蛋白的实际浓度下降，从而影响其活性。为减少这种损失，在长期保存重组蛋白产品之前，建议添加常用的载体蛋白溶液，例如0.1% BSA（牛血清白蛋白）、5% HSA（人血清白蛋白）、10% FBS（胎牛血清）或 5% 海藻糖等。如果重组蛋白的浓度较低，强烈建议添加适量的载体蛋白。

问为什么重组蛋白的体积和质量与预期不符？

答蛋白冻干粉由蛋白原液冻干而来，冻干粉质量不等同于蛋白质量。由于冻⼲产品的体积大⼩受多种因素影响，包括冻⼲前缓冲液的组分、盐离⼦浓度以及产品本身的浓度等。冻⼲粉可能看上去很多，也可能肉眼不易观察到，这些都是正常现象，请您放心使用。在收到产品后，照常复溶、使用或分装储存即可。

问蛋白能保证活性吗？

答我们有现货的产品，有活性数据的话会展示在官网生物活性那栏，没有数据的也不代表就一定没有活性，是我们还没有建立活性检测方法，没有进行测试，但是我们的蛋白都是优先按照有活性的方法去表达纯化的。

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 H5N1 (A/Common magpie/Hong Kong/2256/2006) Hemagglutinin/HA1 Protein (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 38 kDa and the accession number is A0FFY5.
种属	H5N1
表达系统	HEK293 Cells
标签	C-His
蛋白编号	A0FFY5
别名	Harvey rat sarcoma viral oncogene homolog
蛋白构建	A DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza hemagglutinin (A/Common magpie/Hong Kong/2256/2006 (H5N1)) (ABJ96777.1), termed as HA1, was fused with a C-terminal polyhistidine tag. Predicted N terminal: Asp 17
蛋白纯度	> 97 % as determined by SDS-PAGE
分子量	38 kDa (predicted); 50-55 kDa (reducing condition, 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	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.