SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

Novus Biologicals | Catalog # NBP3-11936CL1

Novus Biologicals
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Key Product Details

Species Reactivity

Validated:

SARS-CoV-2

Predicted:

Bat-CoV (100%), SARS-CoV (90%). Backed by our 100% Guarantee.

Applications

ELISA

Label

CoraFluor 1

Antibody Source

Polyclonal Rabbit IgG
View all SARS-CoV-2 ORF7a Primary Antibodies »

Product Specifications

Immunogen

Antibody was raised against a peptide corresponding to 9 amino acids near the carboxyl terminus of SARS-CoV-2 ORF7a protein. The immunogen is located within the last 50 amino acids of the SARS-CoV-2 ORF7a protein.

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Description

CoraFluor(TM) 1 is a high performance terbium-based TR-FRET (Time-Resolved Fluorescence Resonance Energy Transfer) or TRF (Time-Resolved Fluorescence) donor for high throughput assay development. CoraFluor(TM) 1 absorbs UV light at approximately 340 nm, and emits at approximately 490 nm, 545 nm, 585 nm and 620 nm. It is compatible with common acceptor dyes that absorb at the emission wavelengths of CoraFluor(TM) 1. CoraFluor(TM) 1 can be used for the development of robust and scalable TR-FRET binding assays such as target engagement, ternary complex, protein-protein interaction and protein quantification assays.

CoraFluor(TM) 1, amine reactive

CoraFluor(TM) 1, thiol reactive

For more information, please see our CoraFluor(TM) TR-FRET technology flyer.

Scientific Data Images for SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

Product Feature: CoraFluor Probes for TR-FRET

CoraFluor™ 1, amine reactive (Catalog:7920) and CoraFluor™ 2, amine reactive (Catalog # 7950) are terbium-based probes that have been developed for use as TR-FRET donors. They emit wavelengths compatible with commonly used fluorescent acceptor dyes such as BODIPY® (or BDY) and Janelia Fluor® dyes, FITC (Catalog # 5440), TMR and Cyanine 5 (Catalog # 5436). CoraFluor™ fluorescence is brighter and more stable in biological media than existing TR-FRET donors, leading to enhanced sensitivity and improved data generation. CoraFluor™ 1 exhibits excitation upon exposure to a 337 nm UV laser.

Applications for SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

Application
Recommended Usage

ELISA

Optimal dilutions of this antibody should be experimentally determined.
Application Notes
Optimal dilution of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Peptide affinity purified

Formulation

PBS

Preservative

No Preservative

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 4C in the dark. Do not freeze.

Background: SARS-CoV-2 ORF7a

SARS-CoV-2 Open Reading Frame 7a (ORF7a) 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 ORF7a is a type I transmembrane protein with a 121 amino acid (aa) sequence and a theoretical molecular weight of 13.7 kDa (2, 3). ORF7a localizes mostly on the Golgi apparatus but also presents on the cell surface (4). The N-terminal domain of ORF7a is comprised of 7 beta-strands that form 2 beta-sheets, arranged by an immuno-globulin-like beta-sandwich fold (2, 5). The aa sequence alignment of SARS-CoV and SARS-CoV-2's ORF7a has 85.2% sequence identity and 95.9% sequence similarity (3).

Similar to its role in SARS-CoV, ORF7a of SARS-CoV-2 is an inhibitor of the host tetherin bone marrow stromal antigen-2 (BST-2) (2, 4). Functionally, ORF7a binds to BST-2, inhibiting its viral restriction activity by blocking glycosylation (2, 4).

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/s12985-020-01402-1

2. UniProt (P0DTC7)

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. Taylor, J. K., Coleman, C. M., Postel, S., Sisk, J. M., Bernbaum, J. G., Venkataraman, T., Sundberg, E. J., & Frieman, M. B. (2015). Severe Acute Respiratory Syndrome Coronavirus ORF7a Inhibits Bone Marrow Stromal Antigen 2 Virion Tethering through a Novel Mechanism of Glycosylation Interference. Journal of virology. https://doi.org/10.1128/JVI.02274-15

5. Nelson, C. A., Pekosz, A., Lee, C. A., Diamond, M. S., & Fremont, D. H. (2005). Structure and intracellular targeting of the SARS-coronavirus Orf7a accessory protein. Structure (London, England : 1993). https://doi.org/10.1016/j.str.2004.10.010

Alternate Names

2019-nCoV ORF7a, 2019-nCoV ORF7a Protein, Accessory Protein 7a, COVID-19 Accessory Protein 7a, COVID-19 ORF7a, COVID-19 Protein U122, COVID-19 Protein X4, Human coronavirus ORF7a Protein, ORF7a Protein, Protein U122, Protein X4, SARS-CoV-2 Accessory Protein 7a, SARS-CoV-2 Protein U122, SARS-CoV-2 Protein X4

Gene Symbol

ORF7a

Additional SARS-CoV-2 ORF7a Products

Product Documents for SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

Certificate of Analysis

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

Download SDS

Product Specific Notices for SARS-CoV-2 ORF7a Antibody [CoraFluor™ 1]

CoraFluor (TM) is a trademark of Bio-Techne Corp. Sold for research purposes only under agreement from Massachusetts General Hospital. US patent 2022/0025254

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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