Anti-Spike NTD antibody (4A8)

Reference: PTXCOV-A548
Size

100µg

Brand

Product type

Clonality

Description of Anti-Spike NTD antibody (4A8)

General information on Anti-Spike NTD antibody

SARS-CoV-2, the etiological agent of COVID-19 pneumonia, initiates the infection by binding the ACE2 (angiotensin-converting enzyme 2) receptor enriched on the surface of human epithelial cells. This initial interaction is mediated by the spike glycoprotein of the new coronavirus which, subsequently, undergoes proteolytic cleavage and rearrangement to form the membrane fusion complex. Due to its vital role in infection, the spike is currently the most biologically relevant target for the development of therapeutic antibodies and vaccines.
The anti-spike NTD antibody is a fully human IgG immunoglobulin recovered from the convalescent plasma of COVID-19 patients. The antibody was isolated by sorting peripheral blood mononuclear cells (PBMCs) to recover anti-SARS-CoV-2 antibody-secreting subpopulations. Antibody genes were further amplified from single cells (single-cell PCR) and the candidate antibodies were recombinantly expressed in Chinese hamster ovary (CHO) cell lines.
This specific anti-NTD antibody was shown to bind with high affinity to the S1 subunit of the spike glycoprotein of SARS-CoV-2. However, unlike previously described in prior studies with COVID-19 patients, this antibody targets the N-terminal domain (NTD) of the spike protein and not the receptor-binding domain (RBD), as expected.
Interestingly, despite recognizing an epitope outside the infection-initiating domain, the NTD antibody displayed a strong neutralizing activity in tests with authentic and pseudotyped SARS-CoV-2. Further crystallographic studies revealed that the antibody may allow the binding of the virus to its human receptor, ACE2, but prevent the conformational change of the spike, essential for membrane fusion.
The behavior has been observed before in studies with MERS-CoV, suggesting that a variety of different mechanisms are responsible for the efficient neutralization of these viruses in the human organism. Thus, the anti-spike NTD antibody has therapeutic value due to its SARS-CoV-2 neutralizing activity. However, it is also a valuable reagent for research to further elucidate the infection mechanism of the new coronavirus.

Product nameAnti-Spike NTD antibody (4A8)
SpeciesHuman
Expression systemMammalian
Molecular weight150kDa
Purity85%
BufferPBS, pH7,5
FormLiquid
Delivery conditionDry ice
Storage condition4°C for short term; -20°c or -80°C for long term
BrandProteogenix
Size100µg
Aliases /Synonyms4A8 antibody
ReferencePTXCOV-A548
PublicationsaWagner, T. R. et al. NeutrobodyPlex-monitoring SARS-CoV-2 neutralizing immune responses using nanobodies. EMBO Rep. 2021; e52325. doi: 10.15252/embr.202052325
NoteFor research use only. Not suitable for in vitro diagnostic and human use.
IsotypeIgG1
ClonalityMonoclonal Antibody

Reviews

There are no reviews yet.

Be the first to review “Anti-Spike NTD antibody (4A8)”

Your email address will not be published.


300.00

OK

Please select the country of delivery so that we can send you the quotation including shipping costs.

Thank you for your request! You will receive your quotation per e-mail in a few seconds.

If you did not receive your quotation, please check your spam folder.

Contact us to order

+33 (0)3 90 20 54 70

Write us

Categories: