Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His Protein, CF

R&D Systems, part of Bio-Techne | Catalog # 10853-CV

R&D Systems, part of Bio-Techne
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10853-CV-100
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Key Product Details

Source

HEK293

Accession #

YP_009724390.1

Conjugate

Unconjugated

Applications

Bioactivity

View all Spike Proteins and Enzymes »

Product Specifications

Source

Human embryonic kidney cell, HEK293-derived sars-cov-2 Spike protein
SARS-CoV-2 Spike
(Val16-Lys1211)(Asp614Gly)(Arg682Ser, Arg685Ser, Lys986Pro, Val987Pro)
Accession # YP_009724390.1		 GCN4-IZ 6-His tag
N-terminus C-terminus

Purity

>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Val16

Predicted Molecular Mass

138 kDa

SDS-PAGE

140-170 kDa, under reducing conditions.

Activity

Measured by its binding ability in a functional ELISA with Recombinant Human ACE-2 His-tag (Catalog # 933-ZN).

Scientific Data Images for Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His Protein, CF

Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His-tag Protein Binding Activity

Recombinant SARS-CoV-2 Spike (GCN4-IZ) His-tag (Catalog # 10853-CV) binds Recombinant Human ACE-2 His-tag (933-ZN) in a functional ELISA.

Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His-tag Protein SDS-PAGE.

2 μg/lane of Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His-tag Protein (Catalog # 10853-CV) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 140-170 kDa.

Formulation, Preparation and Storage

10853-CV
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Spike

SARS-CoV-2, which causes the global pandemic coronavirus disease 2019 (Covid-19), belongs to a family of viruses known as coronaviruses that are commonly comprised of four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M), and Nucleocapsid protein (N) (1). SARS-CoV-2 Spike Protein (S Protein) is a glycoprotein that mediates membrane fusion and viral entry. The S protein is homotrimeric, with each ~180-kDa monomer consisting of two subunits, S1 and S2 (2). In SARS-CoV-2, as with most coronaviruses, proteolytic cleavage of the S protein into the S1 and S2 subunits is required for activation. The S1 subunit is focused on attachment of the protein to the host receptor while the S2 subunit is involved with cell fusion (3-5). A SARS-CoV-2 variant carrying the S protein amino acid (aa) change D614G has become the most prevalent form in the global pandemic and has been associated with greater infectivity and higher viral load (6,7). The S protein of SARS-CoV-2 shares 75% and 29% aa sequence identity with S protein of SARS-CoV-1 and MERS, respectively. The S Protein of the SARS-CoV-2 virus, like the SARS-CoV-1 counterpart, binds Angiotensin-Converting Enzyme 2 (ACE-2), but with much higher affinity and faster binding kinetics through the receptor binding domain (RBD) located in the C-terminal region of S1 (8). Based on structural biology studies, the RBD can be oriented either in the up/standing or down/lying state with the up/standing state associated with higher pathogenicity (9). Polyclonal antibodies to the RBD of the SARS-CoV-2 protein have been shown to inhibit interaction with the ACE-2 receptor, confirming RBD as an attractive target for vaccinations or antiviral therapy (10). It has been demonstrated that the S Protein can invade host cells through the CD147/EMMPRIN receptor and mediate membrane fusion (11, 12). While the SARS-CoV-2 D614G variant is currently the most prevalent form of the virus, the mechanism of action has not been identified (13).

References

  1. Wu, F. et al. (2020) Nature 579:265.
  2. Tortorici, M.A. and D. Veesler (2019) Adv. Virus Res. 105:93.
  3. Bosch, B.J. et al. (2003) J. Virol. 77:8801.
  4. Belouzard, S. et al. (2009) Proc. Natl. Acad. Sci. 106:5871.
  5. Millet, J.K. and G.R. Whittaker (2015) Virus Res. 202:120.
  6. Korber, et al. (2020) Cell 182:812.
  7. Zhang, L. et al. (2020) Nat. Commun. 11:6013.
  8. Ortega, J.T. et al. (2020) EXCLI J. 19:410.
  9. Yuan, Y. et al. (2017) Nat. Commun. 8:15092.
  10. Jiang, S. et al. (2020) Trends Immuno. 41:355.
  11. Wang, X. et al. (2020) Cell Mol. Immunol. https://doi.org/10.1038/s41423-020-0424-9.
  12. Wang, K. et al. (2020) Sig. Transduct Target Ther. 5:283.
  13. Isabel, et al. (2020) Sci. Rep. 10:14031.

Long Name

Spike Protein

Alternate Names

S Protein

Entrez Gene IDs

918758 (HCoV-229E); 2943499 (HCoV-NL63); 39105218 (HCoV-OC43); 37616432 (MERS-CoV); 1489668 (SARS-CoV); 43740568 (SARS-CoV-2)

Gene Symbol

S

UniProt

YP_009724390.1

Additional Spike Products

Product Documents for Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His Protein, CF

Product Datasheets

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Product Specific Notices for Recombinant SARS-CoV-2 D614G Spike (GCN4-IZ) His Protein, CF

For research use only

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