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SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His)

产品编号 TMPY-05720

SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His) is expressed in HEK293 mammalian cells. The predicted molecular weight is 78.28 kDa and the accession number is A0A6G7K2L4.

SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His)

SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His)

产品编号 TMPY-05720
SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His) is expressed in HEK293 mammalian cells. The predicted molecular weight is 78.28 kDa and the accession number is A0A6G7K2L4.
规格价格库存数量
20 μg
¥ 4,460
5日内发货
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实验操作小课堂
常见问题解答
抑制剂产品应如何储存?
粉末储存在 -20℃,可以存 3 年以上。 母液一般储存于 -80℃,可以存 1 年以上,建议多分装几管,避免反复冻融。 常用的存于 4℃,可放一周以上。
是否能直接用缓冲液对抑制剂 DMSO 母液做梯度稀释?
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。
超声一般需要多久?
超声时长和溶解的量和浓度都有关,一般建议半个小时左右,如果浓度接近最大溶解度,或者需溶解的粉末较多,建议延长超声时间,并辅以加热。
期货产品没有纯度啊?这个纯度在哪里看
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。
化合物如何用于动物实验?如何确立剂量、给药方式等?
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。
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产品信息

生物活性
Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (Fc tag) at 2 μg/mL (100 μL/well) can bind SARS-CoV-2 (2019-nCoV) Spike S1-AVI & His Recombinant Protein, Biotinylated, the EC50 of SARS-CoV-2 (2019-nCoV) Spike S1-AVI & His Recombinant Protein, Biotinylated is 400-800 ng/mL.
产品描述
SARS-CoV-2 Spike S1 Protein, Biotinylated (Avi & His) is expressed in HEK293 mammalian cells. The predicted molecular weight is 78.28 kDa and the accession number is A0A6G7K2L4.
种属
SARS-CoV-2
表达系统
HEK293 Cells
标签Avi, His
蛋白编号A0A6G7K2L4
蛋白构建
A DNA sequence encoding the SARS-CoV-2 (2019-nCoV) Spike S1 Protein (YP_009724390.1) (Val16-Arg685) was expressed with a c-terminal AVI tagged polyhistidine tag at the C-terminus. The purified protein was biotinylated in vitro. Predicted N terminal: Val16
蛋白纯度
> 95 % as determined by SDS-PAGE. > 95 % as determined by SEC-HPLC.
分子量78.28 kDa (predicted)
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 spike (S) glycoprotein of coronaviruses contains protrusions that will only bind to certain receptors on the host cell. Known receptors bind S1 are ACE2, angiotensin-converting enzyme 2; DPP4, dipeptidyl peptidase-4; APN, aminopeptidase N; CEACAM, carcinoembryonic antigen-related cell adhesion molecule 1; Sia, sialic acid; O-ac Sia, O-acetylated sialic acid. The spike is essential for both host specificity and viral infectivity. The term 'peplomer' is typically used to refer to a grouping of heterologous proteins on the virus surface that function together. The spike (S) glycoprotein of coronaviruses is known to be essential in the binding of the virus to the host cell at the advent of the infection process. It's been reported that SARS-CoV-2 (COVID-19 coronavirus, 2019-nCoV) can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion. The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity. The main functions for the Spike protein are summarized as: Mediate receptor binding and membrane fusion; Defines the range of the hosts and specificity of the virus; Main component to bind with the neutralizing antibody; Key target for vaccine design; Can be transmitted between different hosts through gene recombination or mutation of the receptor binding domain (RBD), leading to a higher mortality rate.

参考文献

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