SARS-CoV-2 NSP16 Alexa Fluor™ Plus 680-conjugated Antibody

R&D Systems, part of Bio-Techne | Catalog # FAB10979AFP680

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FAB10979AFP680-100UG
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Key Product Details

Species Reactivity

SARS-CoV-2

Applications

Western Blot

Label

Alexa Fluor Plus 680 (Excitation = 687 nm, Emission = 704 nm)

Antibody Source

Monoclonal Mouse IgG2A Clone # 1044327

View all NSP16 Antibodies »

Product Specifications

Immunogen

E. coli-derived SARS-CoV-2 NSP16/NSP10 protein

Specificity

Detects SARS-CoV-2 NSP16/NSP10 His-tag Complex in direct ELISAs.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2A

Applications

Application
Recommended Usage

Western Blot

Optimal dilution of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Formulation

Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied

Background: NSP16

Non-structural protein 16 (NSP16) and NSP10 are two 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. NSP16 is a small monomeric 298 amino acid protein with a characteristic fold of the class I methyltransferase (MTase) family with a seven-stranded B-sheet surrounded by alpha-helices and loops that bind the cap and form a cap-binding groove and S-adenosylmethionine (SAM) cleft (2,3). NSP10 is a small 139 amino acid protein capable of forming independent dodecameric structures composed of four identical trimers where each monomer is capable of binding two zinc ions (4,5). Both the NSP16 and NSP10 SARS-CoV2 sequences are highly conserved across coronaviruses (3). NSP16 catalyzes 2'-O-MTase activity specifically on capped N7-methylated RNA through methylation of the 2'-hydroxy group of adenine using SAM as a methyl donor (6). The viral RNA cap structure protects it from degradation, promotes mRNA translation, and prevents the viral RNA from being recognized by innate immune mechanisms (7). NSP16 was shown to interact strongly with NSP10 (8) in a monomeric form via hydrophic interactions and hydrogen bonds in the interface (3). The MTase activity of NSP16 requires interaction with NSP10 (2,7). NSP10 interaction extends and narrows the RNA-binding groove that accommodates the substrate and stabilizes NSP16 (2,3,9). The dimerization interface between NSP16 and NSP10 is critical and can be used as a target to effectively reduce replication and pathogenesis (10,11).

References

  1. Snijder, E.J. et al. (2016) Adv. Virus Res 96:59.
  2. Chen, Y. et al. (2011) PLoS Pathog. 7:e1002294.
  3. Rosas-Lemus, M. et al. (2020) bioRxiv In press.
  4. Matthes, N. et al. (2006) FEBS Lett. 580:4143.
  5. Su, D. et al. (2006) J. Virol. 80:7902.
  6. Bouvet, M. et al. (2012) Proc. Natl. Acad. Sci. U.S.A. 109:9372.
  7. Decroly, E. et al. (2011) PLoS Pathog. 7:e1002059.
  8. Pan, J. et al. (2008) PLoS One 3:e3299.
  9. Bouvet, M. et al. (2014) J. Biol. Chem. 289:25783.
  10. Ma, Y. et al. (2015) Proc. Natl. Acad. Sci. 112:9436.
  11. Wang, Y. et al. (2015) J. Virol 89:8416.

Long Name

Non-Structural Protein 16

UniProt

YP_009725311.1 and YP_00972530 (Mouse)

Additional NSP16 Products

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Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices


This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

For research use only

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