SARS-CoV-2 NSP8 Antibody (1044736)

R&D Systems | Catalog # MAB12502

R&D Systems

Key Product Details

Species Reactivity

Validated:

SARS-CoV-2

Cited:

Human

Applications

Validated:

Western Blot, Simple Western

Cited:

Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2B Clone # 1044736
View all NSP8 Primary Antibodies »

Product Specifications

Immunogen

E. coli-derived SARS-CoV-2 NSP8 protein
Ala1-Gln198
Accession # YP_009725304.1

Specificity

Detects SARS-CoV-2 NSP8 in direct ELISAs.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2B

Scientific Data Images for SARS-CoV-2 NSP8 Antibody (1044736)

Detection of SARS-CoV-2 Nsp8 by Western Blot.

Western blot shows recombinant SARS-CoV-2 Nsp8 protein. PVDF membrane was probed with 1 µg/mL of Mouse Anti-SARS-CoV-2 Nsp8 Monoclonal Antibody (Catalog # MAB12502) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (HAF018). A specific band was detected for Nsp8 at approximately 24 kDa (as indicated). This experiment was conducted under reducing conditions and using Western Blot Buffer Group 1.

Detection of SARS-CoV-2 Nsp8 by Simple WesternTM.

Simple Western lane view shows recombinant SARS-CoV-2 Nsp8 protein, loaded at 0.2 mg/mL. A specific band was detected for Nsp8 at approximately 29 kDa (as indicated) using 20 µg/mL of Mouse Anti-SARS-CoV-2 Membrane Monoclonal Antibody (Catalog # MAB12502). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.

Applications for SARS-CoV-2 NSP8 Antibody (1044736)

Application
Recommended Usage

Simple Western

20 µg/mL
Sample: Recombinant SARS-CoV-2 Nsp8 protein

Western Blot

1 µg/mL
Sample: Recombinant SARS-CoV-2 Nsp8 protein

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: NSP8

Non-structural protein 8 (NSP8) is one of several functional proteins released by ORF1a-encoded protease cleavage of the pp1a and pp1ab replicase polyproteins expressed from the coronavirus (CoV) genome (1). The NSPs are involved in the replication and transcription of the viral RNA and not incorporated within the virion particles. Coronaviruses include various highly pathogenic strains such as SARS-CoV, MERS-CoV and SARS-CoV2 that have had significant impact on humans as well as strains that have negatively impacted livestock. NSP8 is a small 198 amino acid protein that forms a dimer with NSP7 and subsequently assembles into a large hexadecameric structure (2). The NSP8 sequence is highly conserved across coronaviruses (2). The NSP8 monomers in each of two asymmetric units can adopt two different conformations: a "golf-club like" structure with the N-terminal shaft and C-terminal head or a bent N-terminal shaft and C-terminal head domain (2). The units stack to form a supercomplex like bricks with layers of NSP7 filling the spaces in between. The supercomplexes are stacked to form a channel with electrostatic properties that would allow RNA to pass through the channel, likely to facilitate efficient replication and transcription. NSP8 was also shown to be able to polymerize small oligomers in a sequence-specific fashion and was consequently proposed to act as an RNA primase for the viral RNA-dependent RNA polymerase (RdRp), NSP12, in SARS-CoV (3). In SARS-CoV- 2, RdRp has been shown to have little activity without NSP8/7 acting as cofactors to form a complex (4) making NSP8 critical for viral polymerase activity. NSP8 was shown to interact with several other viral NSP proteins, including NSP2 and NSP9, (5) as well as multiple host cell proteins (6). NSP8 showed interaction with 3 different signal recognition particle (SRP) host cell proteins suggesting the virus hijacks the SEC61-mediated protein translocation pathway for entry into the endoplasmic reticulum and NSP8 may be involved in targeting (6). 

References

  1. Snijder, E.J. et al. (2016) Adv. Virus Res. 96:59.
  2. Zhai, Y. et al. (2005) Nat. Struct. Mol. Bio. 12:980.
  3. Subissi, L. et al. (2014) Antiviral Res. 101:122.
  4. Yin, W. et al. (2020) Science 368:1499.
  5. von Brunn, A. et al. (2007) PLoS One 2:e459.
  6. Gordon, D.E. et al. (2020) Nature 583:459.

Long Name

Non-Structural Protein 8

Alternate Names

COVID-19

UniProt

YP_009725304.1

Additional NSP8 Products

Product Documents for SARS-CoV-2 NSP8 Antibody (1044736)

Certificate of Analysis

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Product Specific Notices for SARS-CoV-2 NSP8 Antibody (1044736)

For research use only

Related Research Areas

Infectious Diseases

Citations for SARS-CoV-2 NSP8 Antibody (1044736)

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