Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Name: Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF
Brand: R&D Systems
SKU: 10666-CV
Rating: 4 (1 reviews)

R&D Systems, Inc. a Bio-Techne Brand

Catalog # 10666-CV

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Source:	E. coli
Accession #:	YP_009725297.1

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Product Specifications for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Source	E. coli-derived sars-cov-2 NSP1 protein Met1-Gly180 with a C-terminal 6-His tag
Purity	>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin level	<1.0 EU per 1 μg of the protein by the LAL method.
N-terminal sequence Analysis	Met1
Predicted Molecular Mass	21 kDa
SDS-PAGE	20-23 kDa, under reducing conditions

Scientific Data Examples for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

	Recombinant SARS-CoV-2 NSP1 His-tag Protein SDS-PAGE. 2 μg/lane of Recombinant SARS-CoV-2 NSP1 His-tag (Catalog # 10666-CV) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 20-23 kDa under reducing conditions.

Formulation, Preparation and Storage

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

10666-CV

Formulation	Supplied as a 0.2 μm filtered solution in HEPES and NaCl.
Shipping	The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 6 months from date of receipt, -20 to -70 °C as supplied. 3 months, -20 to -70 °C under sterile conditions after opening.

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Background: NSP1

Non-structural protein 1 (NSP1) 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. NSP1, also known as the host shutoff factor, is a small 180 amino acid highly conserved protein among the first to be expressed following cell entry. It is composed of an N-terminal domain, a linker region, and a C-terminal domain with a conserved KH motif that is required and sufficient for specific contacts with ribosomes (2, 3). The C-terminal domain binds tightly to and sterically occludes the entrance region of the mRNA channel in free 40S subunits, 43S pre-initiation complex, and empty, non-translating 80S ribosomes (2, 3) to inhibit translation. NSP1 blocks the innate immune response through suppression of host gene expression. By preventing translation of interferon and downstream signaling responses, it plays a key role in immune evasion (2, 4, 5). NSP1 also induces endonucleolytic cleavage of host mRNAs (6,7). Concomitant translation of more efficiently recognized untranslated regions (UTR) of viral mRNA along with resistance to endonucleolytic cleavage (7) is thought to lead to a switch to production of viral mRNA over host cell mRNA during an infection (3,8). Given the critical role NSP1 plays in virulence, it is an attractive target for small-molecule inhibition and vaccination development (9, 10).

Item	Value
References	Snijder, E.J. et al. (2016) Adv. Virus Res 96:59. Thoms, M. et al. (2020) Science 369:1249. Schubert, K. et al. (2020) Nat. Struct. Mol. Biol. 27:959. Narayanan, K. et al. (2008) J. Virol. 82:4471. Jauregui, A.R. et al. (2013) PLoS One. 8:e62416. Kamitani, W. et al. (2006) Proc. Natl. Acad. Sci. USA 103:12885. Huang, C. et al. (2011) PLoS Pathog. 7:e1002433. Hartenian, E. et al. (2020) J. Biol. Chem. 295:12910. Zust, R. et al. (2007) PLoS Pathog. 3:e109. De Lima Menezes, G. and R.A. da Silva (2020) J. Biomol. Struct. Dyn. (In press).
Long Name	Non-Structural Protein 1
Alternate Names	NSP1

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Customer Reviews for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF (1)

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Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Name: Scott Scarneo

Application: In vitro bioactivity in cell culture

Reason for Rating: Stimulated immune cells evidenced by increased cytokine expression.

Verified Customer | Posted 06/20/2022

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Product Documents for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

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Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

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Product Specifications for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Scientific Data Examples for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Formulation, Preparation and Storage

Carrier Free

Reconstitution Calculator

Background: NSP1

Citations for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Customer Reviews for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF (1)

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Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

Product Documents for Recombinant SARS-CoV-2 NSP1 His-tag Protein, CF

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