Recombinant Biotinylated SARS-COV-2 Spike S1 (Omicron B.1.1.529) Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus.It contains Gln14-Arg683(A67V, HV69-70del, T95I, G142D, VYY143-145del, N211del, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H).
Pureté
> 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
Stérilité
0.22 μm filtered
niveau d'endotoxine
Less than 1EU per μg by the LAL method.
Biological Activity Comment
Immobilized Biotinylated Biotinylated SARS-COV-2 Spike S1 (Omicron B.1.1.529) , His Tag at 1μg/ml (100μl/Well) on streptavidin (5μg/ml) precoated plate. Dose response curve for Human ACE2, hFc Tag with the EC50 of 0.25μg/ml determined by ELISA. See testing image for detail.
Origine: SARS Coronavirus-2 (SARS-CoV-2)
Hôte: HEK-293 Cells
Recombinant
> 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
Restrictions
For Research Use only
Format
Lyophilized
Reconstitution
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/mL is recommended. Dissolve the lyophilized protein in distilled water.
Buffer
Lyophilized from 0.22μm filtered solution in PBS ( pH 7.4). Normally 8 % saccharose is added as protectant before lyophilization.
Stock
-20 °C,-80 °C
Stockage commentaire
-20 to -80°C for 12 months as supplied from date of receipt., -80°C for 3-6 months after reconstitution., 2-8°C for 2-7 days after reconstitution., Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
E2 Protein, Surface Glycoprotein Protein, S Protein
Classe de substances
Viral Protein
Sujet
The spike protein (S) of coronavirus (CoV) attaches the virus to its cellular receptor, angiotensin-converting enzyme 2 (ACE2). A defined receptor-binding domain (RBD) on S mediates this interaction.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
Poids moléculaire
77.94 kDa. Due to glycosylation, the protein migrates to 110-120 kDa based on Tris-Bis PAGE result.