Biotinylated SARS-CoV-2 (COVID-19) S2 protein, His, Avitag™

It's been reported that SARS-CoV-2 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.

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™) . The protein has a calculated MW of 61.5 kDa. The protein migrates as 70-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

-20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Immobilized Biotinylated SARS-CoV-2 S2 protein, His,Avitag (Cat. No. S2N-C52E8) at 1 μg/mL (100 μL/well) on streptavidin (Cat. No. STN-N5116) (0.5 μg/well) plate. can bind SARS-CoV-2 Spike S2 Antibody, Human IgG1 with a linear range of 0.4-6 ng/mL (QC tested).