SARS-CoV-2 (2019-nCoV) Spike S1-Fc Recombinant Protein

COVID-19 Spike S1 Research.
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SARS-CoV-2 (2019-nCoV) Spike S1-Fc Recombinant Protein: 产品信息

纯度
> 90 % as determined by SDS-PAGE.
内毒素
< 1.0 EU per μg protein as determined by the LAL method.
生物活性
Measured by its binding ability in a functional ELISA.
Immobilized human ACE2 protein (His tag) at 2μg/mL (100μL/well) can bind SARS-CoV-2 (2019-nCoV) Spike Protein (S1 Subunit, Fc Tag)(40591-V02H), the EC50 of SARS-CoV-2 (2019-nCoV) Spike Protein (S1 Subunit, Fc Tag) is 25-60 ng/mL.
蛋白构建
A DNA sequence encoding the SARS-CoV-2 (2019-nCoV) spike protein S1 Subunit (YP_009724390.1) (Val16-Arg685) was expressed with the Fc region of human IgG1 at the C-terminus.
表达宿主
HEK293 Cells
种属
2019-nCoV
预测 N 端
Val16
分子量
The recombinant SARS-CoV-2 (2019-nCoV) Spike Protein (S1 Subunit, Fc Tag) consists of 908 amino acids and predicts a molecular mass of 101.7 kDa.
缓冲液
Lyophilized from sterile PBS, pH 7.4.
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
运输方式
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
稳定性 & 储存条件
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
复溶
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

SARS-CoV-2 (2019-nCoV) Spike S1-Fc Recombinant Protein: 图片

Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (His tag) at 2μg/mL (100μL/well) can bind SARS-CoV-2 (2019-nCoV) Spike Protein (S1 Subunit, Fc Tag)(40591-V02H), the EC50 of SARS-CoV-2 (2019-nCoV) Spike Protein (S1 Subunit, Fc Tag) is 25-60 ng/mL.

SARS-CoV-2 (2019-nCoV) Spike S1-Fc Recombinant Protein: 别称

coronavirus spike Protein, 2019-nCoV; cov spike Protein, 2019-nCoV; ncov RBD Protein, 2019-nCoV; ncov s1 Protein, 2019-nCoV; ncov s2 Protein, 2019-nCoV; ncov spike Protein, 2019-nCoV; NCP-CoV RBD Protein, 2019-nCoV; NCP-CoV s1 Protein, 2019-nCoV; NCP-CoV s2 Protein, 2019-nCoV; NCP-CoV Spike Protein, 2019-nCoV; novel coronavirus RBD Protein, 2019-nCoV; novel coronavirus s1 Protein, 2019-nCoV; novel coronavirus s2 Protein, 2019-nCoV; novel coronavirus spike Protein, 2019-nCoV; RBD Protein, 2019-nCoV; S1 Protein, 2019-nCoV; S2 Protein, 2019-nCoV; Spike RBD Protein, 2019-nCoV

Coronavirus spike 背景信息

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
  • Shen S, et al. (2007) Expression, glycosylation, and modification of the spike (S) glycoprotein of SARS CoV. Methods Mol Biol. 379: 127-35.
  • Du L, et al. (2009) The spike protein of SARS-CoV--a target for vaccine and therapeutic development. Nat Rev Microbiol. 7 (3): 226-36.
  • Xiao X, et al. (2004) The SARS-CoV S glycoprotein. Cell Mol Life Sci. 61 (19-20): 2428-30.

2019-nCoV Coronavirus spike 蛋白

  • Analysis of SARS-CoV-2 Antibodies in COVID-19 Convalescent Blood using a Coronavirus Antigen Microarray
    Author
    De Assis, RR;Jain, A;Nakajima, R;Jasinskas, A;
    Year
    2020
    Journal
    BioRxiv
  • Analysis of Serologic Cross-Reactivity Between Common Human Coronaviruses and SARS-CoV-2 Using Coronavirus Antigen Microarray
    Author
    Khan, S;Nakajima, R;Jain, A;De Assis, RR;Jasinskas, A;
    Year
    2020
    Journal
    BioRxiv
  • Functional and Genetic Analysis of Viral Receptor ACE2 Orthologs Reveals a Broad Potential Host Range of SARS-CoV-2
    Author
    Liu, Y;Hu, G;Wang, Y;Zhao, X;Ji, F;Ren, W;Gong, M;
    Year
    2020
    Journal
    bioRxiv
    Application
    FACS
  • Alveolar macrophage dysfunction and cytokine storm in the pathogenesis of two severe COVID-19 patients
    Author
    Wang, C;Xie, J;Zhao, L;Fei, X;Zhang, H;Tan, Y;Nie, X;Zhou, L;Liu, Z;Ren, Y;Yuan, L;Zhang, Y;Zhang, J;Liang, L;Chen, X;Liu, X;Wang, P;Han, X;Weng, X;Chen, Y;Yu, T;Zhang, X;Cai, J;Chen, R;Shi, Z;Bian, X;
    Year
    2020
    Journal
    EBioMedicine
    Application
    labeling cells
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