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> Recombinant 2019-nCoV Spike Protein (RBD-SD1, mFc Tag)

Recombinant 2019-nCoV Spike Protein (RBD-SD1, mFc Tag)

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Cat# PKSR030476-1

Size : 1mg

Marca : Elabscience

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Synonyms 2019-nCoV S RBD Protein, 2019-nCov RBD Protein
Species SARS-CoV-2
Expression Host HEK293 Cells
Sequence Arg319-Pro589
Accession QHD43416.1
Calculated Molecular Weight 57.0 kDa
Observed Molecular Weight 60-80 kDa
Tag C-mFC
Bio-activity Immobilized Human ACE-2-Fc(Cat#PKSR030492) at 2μg/ml (100 μl/well) can bind Recombinant 2019-nCoV Spike Protein (RBD-SD1, mFc Tag) (Cat#PKSR030476). The ED50 of Recombinant 2019-nCoV Spike Protein (RBD-SD1, mFc Tag) (Cat#PKSR030476) is 15.5 ng/ml.
Purity > 95 % as determined by reducing SDS-PAGE.
Endotoxin < 1.0 EU per μg of the protein as determined by the LAL method.
Storage Store at < -20°C, stable for 6 months. Please minimize freeze-thaw cycles.
Shipping This product is provided as liquid. It is shipped at frozen temperature with blue ice/gel packs. Upon receipt, store it immediately at < - 20°C.
Formulation Supplied as a 0.2 μm filtered solution of PBS, pH7.4.
Reconstitution Not Applicable
Background The spike (S) glycoprotein of coronaviruses contains protrusions that will only bind to certain receptors on the host cell. Known receptors bind S1 are ACE2, angiotensin-converting enzyme 2; DPP4, dipeptidyl peptidase-4; APN, aminopeptidase N; CEACAM, carcinoembryonic antigen-related cell adhesion molecule 1; Sia, sialic acid; O-ac Sia, O-acetylated sialic acid. The spike is essential for both host specificity and viral infectivity. The spike (S) glycoprotein of coronaviruses is known to be essential in the binding of the virus to the host cell at the advent of the infection process. It's been reported that SARS-CoV-2 (COVID-19 coronavirus, 2019-nCoV) can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion. The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity. The main functions for the Spike protein are summarized as: Mediate receptor binding and membrane fusion; Defines the range of the hosts and specificity of the virus; Main component to bind with the neutralizing antibody; Key target for vaccine design; Can be transmitted between different hosts through gene recombination or mutation of the receptor binding domain (RBD), leading to a higher mortality rate.
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Biotinylated

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