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SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NBP3-15985

Novus Biologicals, part of Bio-Techne
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NBP3-15985-100ul
NBP3-15985-20ul

Key Product Details

Species Reactivity

Validated:

SARS-CoV-2

Applications

Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Format

Azide and BSA Free

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Product Summary for SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

Immunogen

A synthetic peptide corresponding to a sequence within amino acids 100-200 of coronavirus ORF3A (YP_009724391.1). GLEAPFLYLYALVYFLQSINFVRIIMRLWLCWKCRSKNPLLYDANYFLCWHTNCYDYCIPYNSVTSSIVITSGDGTTSPISEHDYQIGGYTEKWESGVKDC

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Scientific Data Images for SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

Western Blot: SARS-CoV-2 ORF3a AntibodyAzide and BSA Free [NBP3-15985]

Western Blot: SARS-CoV-2 ORF3a AntibodyAzide and BSA Free [NBP3-15985]

Western Blot: SARS-CoV-2 ORF3a Antibody [NBP3-15985] - Western blot analysis of extracts of 293T cells, using SARS-CoV-2 ORF3a antibody (NBP3-15985) at 1:5000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution. Lysates/proteins: 25ug per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 90s.

Applications for SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

Application
Recommended Usage

Western Blot

1:2000 - 1:6000
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Affinity purified

Formulation

PBS, 50% glycerol, pH7.3

Format

Azide and BSA Free

Preservative

0.01% Thimerosal

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

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

Stability & Storage

Store at -20C. Avoid freeze-thaw cycles.

Background: SARS-CoV-2 ORF3a

SARS-CoV-2 Open Reading Frame 3a (ORF3a) is one of the nine downstream accessory protein open reading frames of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the causative agent of COVID-19 (1). SARS-CoV-2 ORF3a is 475 amino acids (aa) with a theoretical molecular weight of 31 kDa (1, 2). The amino acid sequence alignment of SARS-CoV and SARS-CoV-2's ORF3a has 72% sequence identity and 90% sequence similarity (3). Structurally, ORF3a is a homotetramer that is comprised of two non-covalently linked homodimers (2).

The SARS-CoV-2 ORF3a protein encodes for a Ca2+ ion channel that functions in NLRP3 (NOD-, LRR- and pyrin domain-containing protein 3) inflammasome activation (3, 4). The ORF3a ion channel also functions in viral particle release as well as apoptotic and necrotic cell death (5). SARS-CoV-2 ORF3a interacts with the inflammasome component TRAF3 (TNF Receptor Associated Factor 3) which activates ASC (apoptosis-associated speck-like protein contain CARD) ubiquitination and, in-turn, stimulates caspase-1 activation and IL-1beta (interleukin-1-beta) production and maturation (3, 4). IL-1beta activation results in cytokine production and the overproduction of cytokines referred to as a cytokine storm, a hallmark of COVID-19 (4). Additionally, high throughput screening experiments have revealed the SARS-CoV-2 ORF3a binds to the human heme oxygenase (HMOX1) protein (5). HMOX1 has a role in reducing inflammation and tissue damage, both features of SARS-CoV-2 infection (5). The ORF3a-HMOX1 interaction will be worth exploring for its role in innate immune response and as a potential therapeutic target for COVID-19 (5).

Alternative names for SARS-CoV-2 ORF3a includes 2019-nCoV ORF3a protein, COVID-19 ORF3a, Human coronavirus ORF3a protein, ORF3a protein, SARS-CoV-2 accessory protein 3a, SARS-CoV-2 protein 3a, SARS-CoV-2 protein U274, and SARS-CoV-2 protein X1.

References

1. Michel, C. J., Mayenr, C., Poch, O., & Thompson, J. D. (2020). Characterization of accessory genes in coronavirus genomes. Virology journal. https://doi.org/10.1186/s12985-020-01402-12. UniProt (P0DTC3)

3. Yoshimoto F. K. (2020). The Proteins of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS CoV-2 or n-COV19), the Cause of COVID-19. The protein journal. https://doi.org/10.1007/s10930-020-09901-4

4. Oladele, J. O., Ajayi, E. I., Oyeleke, O. M., Oladele, O. T., Olowookere, B. D., Adeniyi, B. M., Oyewole, O. I., & Oladiji, A. T. (2020). A systematic review on COVID-19 pandemic with special emphasis on curative potentials of Nigeria based medicinal plants. Heliyon. https://doi.org/10.1016/j.heliyon.2020.e04897

5. Batra, N., De Souza, C., Batra, J., Raetz, A. G., & Yu, A. M. (2020). The HMOX1 Pathway as a Promising Target for the Treatment and Prevention of SARS-CoV-2 of 2019 (COVID-19). International journal of molecular sciences. https://doi.org/10.3390/ijms21176412

Alternate Names

2019-nCoV ORF3a, 2019-nCoV ORF3a Protein, COVID-19 ORF3a, Human coronavirus ORF3a Protein, ORF3a protein, SARS-CoV-2, SARS-CoV-2 Accessory protein 3a, SARSCoV2 ORF3a Protein, SARS-CoV-2 ORF3a Protein, SARS-CoV-2 Protein 3a, SARS-CoV-2 Protein U274, SARS-CoV-2 Protein X1, Severe Acute Respiratory Syndrome Coronavirus 2

Gene Symbol

ORF3a

Additional SARS-CoV-2 ORF3a Products

Product Documents for SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for SARS-CoV-2 ORF3a Antibody - Azide and BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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⚠ WARNING: This product can expose you to chemicals including Methotrexate, which is known to the State of California to cause reproductive toxicity with developmental effects. For more information, go to www.P65Warnings.ca.gov