Anti-SARS-CoV-2 Spike NTD (Clone 2215)

Anti-SARS-CoV-2 Spike NTD (Clone 2215)

Product No.: LT6000

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Product No.LT6000
Clone
2215
Target
SARS-CoV-2 Spike NTD
Product Type
Recombinant Monoclonal Antibody
Alternate Names
COV2-2215, SARS-CoV2 Spike NTD, COVID-19, 2019-nCoV, Severe acute respiratory syndrome coronavirus 2, SARS-CoV2
Isotype
Human IgG1
Applications
ELISA

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Product Size
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Antibody Details

Product Details

Reactive Species
SARS-CoV-2
Virus
Expression Host
HEK-293 Cells
Immunogen
Sequenced from human survivors of COVID-19 (SARS-CoV-2)
Product Concentration
≥ 5.0 mg/ml
Endotoxin Level
< 1.0 EU/mg as determined by the LAL method
Purity
≥95% monomer by analytical SEC
Formulation
This recombinant monoclonal antibody is aseptically packaged and formulated in 0.01 M phosphate buffered saline (150 mM NaCl) PBS pH 7.2 - 7.4 with no carrier protein, potassium, calcium or preservatives added. Due to inherent biochemical properties of antibodies, certain products may be prone to precipitation over time. Precipitation may be removed by aseptic centrifugation and/or filtration.
Product Preparation
Recombinant antibodies are manufactured in an animal free facility using only in vitro protein free cell culture techniques and are purified by a multi-step process including the use of protein A or G to assure extremely low levels of endotoxins, leachable protein A or aggregates.
Storage and Handling
This antibody may be stored sterile as received at 2-8°C for up to one month. For longer term storage, aseptically aliquot in working volumes without diluting and store at -80°C. Avoid Repeated Freeze Thaw Cycles.
Country of Origin
USA
Shipping
Ships Overnight on Blue Ice
Applications and Recommended Usage?
Quality Tested by Leinco
ELISA
Each investigator should determine their own optimal working dilution for specific applications. See directions on lot specific datasheets, as information may periodically change.

Description

Specificity
Anti-SARS-CoV-2 Spike NTD, clone 2215, specifically targets an epitope on the SARS-CoV-2 spike protein N-terminal domain.
Antigen Distribution
The spike NTD is expressed on the surface of SARS-CoV-2.
Background
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease 2019 (COVID-19), is an enveloped, single-stranded, positive-sense RNA virus that belongs to the Coronaviridae family 1. The SARS-CoV-2 genome, which shares 79.6% identity with SARS-CoV, encodes four essential structural proteins: the spike (S), envelope (E), membrane (M), and nucleocapsid protein (N) 2. The S protein is a transmembrane, homotrimeric, class I fusion glycoprotein that mediates viral attachment, fusion, and entry into host cells 3. Each ~180 kDa monomer contains two functional subunits, S1 (~700 a.a) and S2 (~600 a.a), that mediate viral attachment and membrane fusion, respectively. S1 contains two major domains, the N-terminal (NTD) and C-terminal domains (CTD). In both SARS-CoV and SARS-CoV-2, the CTD contains the receptor-binding domain (RBD), which binds to the angiotensin-converting enzyme 2 (ACE2) receptor on host cells3-5. The NTD of SARS-CoV-2 does not bind to ACE26, and the function of NTD in SARS-CoV-2 infection is not well understood. In other CoVs, the NTD may promote attachment by binding to sugar moieties7 and might play a role in the conformational change of S2 required for membrane fusion8. While most neutralizing antibodies target the RBD domain and block receptor binding, potent neutralizing antibodies targeting NTD were isolated from convalescent COVID19 patients9, identifying the NTD as an attractive candidate for vaccines and therapeutics. In addition, the NTD is a promising antigen for diagnostic tests, as there is only 53.5% homology between the NTD of SARS-CoV-2 and SARS-CoV10.

Antigen Details

Research Area
COVID-19
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Seasonal and Respiratory Infections
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Viral

References & Citations

1. Zhou, P., Yang, X., Wang, X. et al. Nature 579, 270–273. 2020.
2. Wu, F., Zhao, S., Yu, B. et al. Nature 579, 265–269. 2020.
3. Wrapp D, Wang N, Corbett KS, et al. bioRxiv. 2020.
4. Walls AC, Park YJ, Tortorici MA, et al. Cell. 181(2):281-292.e6. 2020.
5. Li W, Zhang C, Sui J, et al. EMBO J. 24(8):1634-1643. 2020.
6. Wang Q, Zhang Y, Wu L, et al. Cell. 181(4):894-904.e9. 2020.
7. Park, Y., Walls, A.C., Wang, Z. et al. Nat Struct Mol Biol 26, 1151–1157. 2019.
8. Zhou, H., Chen, Y., Zhang, S. et al. Nat Commun 10, 3068. 2019.
9. Chi X, Yan R, Zhang J, et al. Science. eabc6952. 2020.
10. Ou, X., Liu, Y., Lei, X. et al. Nat Commun 11, 1620. 2020.
Indirect Elisa Protocol

Formats Available

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Prod No.
Description
LT6000
Products are for research use only. Not for use in diagnostic or therapeutic procedures.