Influenza A H1N1 (A/California/04/2009) Hemagglutinin/HA-specific B cell probe (Y108F, His & Avi), Biotinylated

Influenza A H1N1 (A/California/04/2009) Hemagglutinin/HA-specific B cell probe (Y108F, His & Avi), Biotinylated

产品编号 TMPY-06927 Influenza A H1N1 (A/California/04/2009) Hemagglutinin/HA-specific B cell probe (Y108F, His & Avi), Biotinylated

Influenza A H1N1 (A/California/04/2009) Hemagglutinin/HA-specific B cell probe (Y108F, His & Avi), Biotinylated is expressed in Baculovirus insect cells with His and Avi tag. The predicted molecular weight is 59.58 kDa and the accession number is ACP41105.1.

规格	价格	库存	数量
20 μg	¥ 3,170	5日内发货

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常见问题解答

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。

问动物不能耐受 DMSO，给药时 DMSO量应该如何控制？

答对于普通的老鼠，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。

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。

问小规格产品，收到瓶子后看不到任何东西？

答由于产品规格小，粉末在运输过程中产生的静电导致过于分散，管壁和盖子上皆会粘着，您可以放心，离心后加入适量溶剂直接配制母液、充分溶解即可。

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 H1N1 (A/California/04/2009) Hemagglutinin/HA-specific B cell probe (Y108F, His & Avi), Biotinylated is expressed in Baculovirus insect cells with His and Avi tag. The predicted molecular weight is 59.58 kDa and the accession number is ACP41105.1.
种属	H1N1
表达系统	Baculovirus Insect Cells
标签	C-His-Avi
蛋白编号	ACP41105.1
别名	Harvey rat sarcoma viral oncogene homolog
蛋白构建	A DNA sequence encoding the Influenza A virus ((A/California/04/2009) (H1N1)) hemagglutinin (translated amino acids of ACP41105.1) (Y108F, Met1-Gly519), termed as HA-specific B cell probe, was expressed with a C-terminal polyhistidine tag followed by an AVI tag. The expressed protein was biotinylated in vivo by the Biotin-Protein ligase (BirA enzyme) which is co-expressed. Predicted N terminal: Asp 18
蛋白纯度	≥ 95 % as determined by SDS-PAGE. ≥ 90 % as determined by SEC-HPLC.
分子量	59.58 kDa (predicted); 66.9 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 7.5. 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.