HCoV-HKU1 Spike RBD His-tag Antibody Summary
Ser292-Asp453,
Accession # P15423.1
Applications
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Scientific Data
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Detection of Spike RBD in CHO Chinese hamster ovary cell line transfected with HCoV-229E. Spike RBD was detected in immersion fixed CHO Chinese hamster ovary cell line transfected with HCoV-229E (positive staining), HCoV-HKU1 transfected (negative staining), HCoV-NL63 transfected cell (negative staining), and CHO Chinese hamster ovary cell line (non-transfected, negative staining) using Mouse Anti-HCoV-HKU1 Spike RBD His-tag Monoclonal Antibody (Catalog # MAB10937) at 8 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cell cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
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HCoV-HKU1 Spike RBD Binding to Human Aminopeptidase N/CD13 is Blocked by HCoV-HKU1 Antibody. In a functional ELISA binding assay, 0.03-0.15 μg/mL of this antibody will block 50% of the binding of 4 μg/mL of Recombinant Human Aminopeptidase N/CD13 (3815-ZN) to immobilized Recombinant HCoV-229E Spike RBD His-tag Protein (10612-CV) coated at 5 μg/mL (100 µL/well). At 1 μg/mL, this antibody will block >90% of the binding.
Reconstitution Calculator
Preparation and Storage
- 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.
Background: Spike RBD
HCoV-229E belongs to a family of viruses known as coronaviruses that are commonly comprised of a large plus-strand RNA genome and four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M), and Nucleocapsid protein (N). HCoV-229E is a member of the alpha-coronavirus family and was discovered in 1966 (1, 2). Other well-known human coronaviruses include three viruses that cause relatively mild respiratory disease: HCoV-NL63, HCoV-HKU1 and HCov-OC43, plus three viruses that caused the Severe Acute Respiratory Syndrome (SARS-CoV), the Middle East Respirator Syndrome (MERS-CoV), and the global pandemic Covid-19 (SARS-CoV2). HCov-229E Spike Protein (S Protein) is a glycoprotein that mediates membrane fusion and viral entry. As with most coronaviruses, proteolytic cleavage of the S protein generates two distinct peptides, S1 and S2 subunits. The S1 subunit is focused on attachment of the protein to the host receptor while the S2 subunit is involved with cell fusion. Although HCoV-229E S protein shares high homology (56%) with HCoV-NL63, it does not employ Angiotensin-Converting Enzyme 2 (ACE2) as the receptor like HCoV-NL63. Instead, HCoV-229E engages CD13 (aminopeptidase N) for cellular entry and replication (3). The receptor binding domain (RBD) of HCoV-229E is solely responsible for receptor binding through three extended receptor binding loops (4).
- Hamre, D. and J.J. Procknow (1966) Proc. Soc. Exp. Biol. Med. 121:190.
- Van der Hoek, L. et al. (2004) Nat. Med. 10:368.
- Yeager, C.L. et al. (1992) Nature 357:420.
- Wong, A.H.M. et al. (2017) Nat. Commun. 8:1735.
Product Datasheets
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