Name: SARS-CoV-2 (2019-nCoV) Spike Protein (S2 ECD, His tag)
Price: Inquiry

- Overview
  - 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. Its been reported that 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.
    
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- Properties
  - Source
    
    Baculovirus-insect cells
    
    Type
    
    Recombinant Proteins
    
    Purification
    
    > 90 % as determined by SDS-PAGE.
    
    Formulation
    
    Lyophilized from sterile 20 mM PB, 300 mM NaCl, 10 % glycerol, pH 7.0. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
    
    Storage
    
    Samples are stable for up to twelve months from date of receipt at -20°C to -80°C Store it under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
    
    Endotoxin
    
    < 1.0 EU per ug protein as determined by the LAL method.
    
    * For Research Use Only. Not for use in diagnostic/therapeutics procedures.

SARS-CoV-2 (2019-nCoV) Spike Protein (S2 ECD, His tag)

SARS-CoV-2 (2019-nCoV) Spike Protein (S2 ECD, His tag)

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