Influenza A H1N1 Hemagglutinin / HA 重组蛋白 (TMPY-06887)

Influenza A H1N1 (A/Hawaii/70/2019;A/Guangdong-Maonan/SWL1536/2019) Hemagglutinin/HA Protein (His)

产品编号 TMPY-06887 Influenza A H1N1 (A/Hawaii/70/2019;A/Guangdong-Maonan/SWL1536/2019) Hemagglutinin/HA Protein (His)

Influenza A H1N1 (A/Hawaii/70/2019;A/Guangdong-Maonan/SWL1536/2019) Hemagglutinin/HA Protein (His) is expressed in Baculovirus insect cells with His tag. The predicted molecular weight is 59.24 kDa.

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

问是否能直接用缓冲液对抑制剂 DMSO 母液做梯度稀释？

答大部分情况下，都是可以溶解的。但有时，有机试剂直接加入水相介质时会析出。建议将抑制剂先以DMSO做梯度稀释，再将经过稀释的抑制剂加入缓冲液或细胞培养基。有些抑制剂甚至只有在其工作浓度下才能溶于水相。比如细胞实验中希望终浓度为 1 μM 的话，可以把 10 mM 的 DMSO 母液用 DMSO 稀释到 1 mM，再吸 2 μL 加入到 2 mL 的生理盐水/PBS/细胞培液，终浓度即为 1 μM。为避免药物析出，稀释前，可将母液和培养基 37℃ 预热，避免温度低造成严重析出。若稀释过程中出现化合物析出的情况，建议您采用超声加热的方法使其复溶。

问溶解度中写的“< 1 mg/mL refers to the slightly soluble or insoluble ”是什么意思？

答这句话指的是，如果溶解度 < 1 mg/mL，那我们就认为它是微溶或不溶的，这是针对写的“DMSO：Insoluble”或“DMSO：slightly soluble”这类化合物的。

问母液配置的计算方法？

答（1） c=n/v=m/M/v 浓度=物质的量/体积=质量/相对分子质量/体积（2）官网产品详情页下方有溶液配制表格，可以参考计算好的加入溶剂体积

问产品溶解需要超声吗？如果没有超声仪怎么办？

答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。

问如何选择合适的溶剂？

答常用的溶剂包括DMSO、水、乙醇等。建议您根据抑制剂给出的溶解度参考，选择合适的溶剂。如果该抑制剂可以溶于DMSO，建议使用没有吸潮新开封的 DMSO，如果有潮气污染，很容易带来抑制剂降解或难溶的问题。如果该抑制剂可以溶于水，建议您根据实验类型选择无菌水、生理盐水、无菌 PBS 、培养基等作为溶剂。

产品信息

生物活性	Measured by its ability to agglutinate guinea pig red blood cells. HA titer is 0.08-0.8 μg/mL for 1% GRBC.
产品描述	Influenza A H1N1 (A/Hawaii/70/2019;A/Guangdong-Maonan/SWL1536/2019) Hemagglutinin/HA Protein (His) is expressed in Baculovirus insect cells with His tag. The predicted molecular weight is 59.24 kDa.
种属	H1N1
表达系统	Baculovirus Insect Cells
标签	C-His
别名	Harvey rat sarcoma viral oncogene homolog
蛋白构建	A DNA sequence encoding the Influenza A virus ((A/Hawaii/70/2019;A/Guangdong-Maonan/SWL1536/2019) (H1N1)) hemagglutinin (translated amino acids of EPI1542570), termed as HA, was expressed with the bacteriophage T4 fibritin and a polyhistidine tag at the C-terminus. Predicted N terminal: Asp 18
蛋白纯度	≥ 95 % as determined by SDS-PAGE.
分子量	59.24 kDa (predicted); 65.8 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 20 mM Tris, 300 mM NaCl, 10% Glycerol, pH 8.0.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.