1. Recombinant Proteins
  2. Viral Proteins Biotinylated Proteins
  3. SARS-CoV S Protein RBD (HEK293, His-Avi)

SARS-CoV S Protein RBD (HEK293, His-Avi)

Cat. No.: HY-P78346
Handling Instructions

The SARS-CoV S protein coordinates viral entry by interacting with human ACE2 and CLEC4M/DC-SIGNR receptors to attach viral particles to the cell membrane. It downregulates host tethering protein (BST2) through lysosomal degradation, antagonizing its antiviral activity. SARS-CoV S Protein RBD (HEK293, His-Avi) is the recombinant Virus-derived SARS-CoV S protein RBD, expressed by HEK293 , with C-Avi, C-His labeled tag. The total length of SARS-CoV S Protein RBD (HEK293, His-Avi) is 222 a.a., with molecular weight of 36-46 kDa.

For research use only. We do not sell to patients.

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Description

The SARS-CoV S protein coordinates viral entry by interacting with human ACE2 and CLEC4M/DC-SIGNR receptors to attach viral particles to the cell membrane. It downregulates host tethering protein (BST2) through lysosomal degradation, antagonizing its antiviral activity. SARS-CoV S Protein RBD (HEK293, His-Avi) is the recombinant Virus-derived SARS-CoV S protein RBD, expressed by HEK293 , with C-Avi, C-His labeled tag. The total length of SARS-CoV S Protein RBD (HEK293, His-Avi) is 222 a.a., with molecular weight of 36-46 kDa.

Background

The SARS-CoV S protein is implicated in down-regulating host tetherin (BST2) through lysosomal degradation, thus counteracting its antiviral activity. In the context of infection, the S protein attaches the virion to the cell membrane by interacting with host receptors, initiating the viral entry process. The binding to human ACE2 and CLEC4M/DC-SIGNR receptors, coupled with the subsequent internalization of the virus into the endosomes of the host cell, induces conformational changes in the S glycoprotein. Additionally, proteolysis by cathepsin CTSL may unmask the fusion peptide of S2, activating membrane fusion within endosomes. These orchestrated events underscore the pivotal role of the SARS-CoV S protein in mediating viral entry and evading host antiviral defenses, shedding light on its significance in the pathogenesis of SARS-CoV infections. Further exploration is crucial to unveil the intricate molecular mechanisms underlying these processes and to identify potential targets for therapeutic interventions.

Species

Virus

Source

HEK293

Tag

C-Avi;C-His

Accession

P59594 (R306-F527)

Gene ID

1489668  [NCBI]

Molecular Construction
N-term
SARS-CoV S (R306-F527)
Accession # P59594
His-Avi
C-term
Synonyms
S protein RBD; S glycoprotein RBD; Spike protein RBD
Molecular Weight

36-46 kDa

Purity

Greater than 95% as determined by Tris-Bis PAGE.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation

SARS-CoV S Protein RBD (HEK293, His-Avi) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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SARS-CoV S Protein RBD (HEK293, His-Avi)
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HY-P78346
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