SARS-CoV-2 Spike Protein (SARS-CoV-2 S) (B.1.1.529 - Omicron, RBD) (His-Avi Tag,Biotin)

Catalog No. ABIN7041442

This Recombinant SARS-CoV-2 Spike protein is expressed in HEK-293 Cells.

Quick Overview for SARS-CoV-2 Spike Protein (SARS-CoV-2 S) (B.1.1.529 - Omicron, RBD) (His-Avi Tag,Biotin) (ABIN7041442)

Target: SARS-CoV-2 Spike (SARS-CoV-2 S)

Protein Type: Recombinant

Origin: SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Omicron

Source: HEK-293 Cells

Application: ELISA, SDS-PAGE (SDS)

Purity: > 95% as determined by SDS-PAGE.

Product Details

Protein Characteristics: B.1.1.529 - Omicron, RBD

Purification tag / Conjugate: This SARS-CoV-2 Spike protein is labelled with His-Avi Tag,Biotin.

Purpose: Biotinylated SARS-CoV-2 Spike RBD, His,Avitag™ (B.1.1.529/Omicron) (MALS verified)

Specificity: Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

Characteristics: Biotinylated SARS-CoV-2 Spike RBD, His,Avitag (B.1.1.529/Omicron) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1(G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H). The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: B.1.1.529; GISAID clade: GR/484A; Nextstrain clade: 21K). Predicted N-terminus: Arg 319

Sterility: 0.22 μm filtered

Endotoxin Level: Less than 1.0 EU per μg by the LAL method.

Application Details

Comment:

Ready-to-use AvitagTM biotinylated protein:
The product is exclusively produced using the AvitagTM technology. Briefly, a unique 15 amino acid peptide, the Avi tag, is introduced into the recombinant protein during expression vector construction. The single lysine residue in the Avi tag is enzymatically biotinylated by the E. Coli biotin ligase BirA.

This single-point enzymatic labeling technique brings many advantages for commonly used binding assays. The biotinylation happens on the lysine residue of Avi tag, and therefore does NOT interfere with the target protein's natural binding activities. In addition, when immobilized on an avidin-coated surface, the protein orientation is uniform because the position of the Avi tag in the protein is precisely controlled.

Restrictions: For Research Use only

Handling

Format: Lyophilized

Buffer: Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Handling Advice: Please avoid repeated freeze-thaw cycles.

Storage: -20 °C/-80 °C

Storage Comment: For long term storage, the product should be stored at lyophilized state at -20°C or lower.This product is stable after storage at:
4-8°C for 12 months in lyophilized state,
-70°C for 3 months under sterile conditions after reconstitution.

Expiry Date: 12 monts

Target Details

Target: SARS-CoV-2 Spike (SARS-CoV-2 S)

Alternative Name: SARS-CoV-2 Spike

Target Type: Viral Protein

Background: It's been reported that Coronavirus 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.

Molecular Weight: 28.5 kDa