SARS-CoV-2 Spike Protein (B.1.617.2 - delta, Trimer) (His tag)

Catalog No. ABIN7012937

Product Details

Target: SARS-CoV-2 Spike

Protein Type: Recombinant

Biological Activity: Active

Protein Characteristics: B.1.617.2 - delta, Trimer

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

Source: HEK-293 Cells

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

Characteristics: SARS-CoV-2 Spike Trimer, His Tag is expressed from human 293 cells (HEK293). It contains AA Val 16 - Pro 1213 (Accession # QHD43416.1). The mutations (T19R, G142D, EF156-157del, R158G, L452R, T478K, D614G, P681R, D950N) were identified in the SARS-CoV-2 variants which emerged in India (known as B.1.617.2). The recombinant protein is expressed from human 293 cells (HEK293) with T4 fibritin trimerization motif and a polyhistidine tag at the N-terminus. Proline substitutions (F817P, A892P, A899P, A942P, K986P, V987P) and alanine substitutions (R683A and R685A) are introduced to stabilize the trimeric prefusion state of SARS-CoV-2 S protein and abolish the furin cleavage site, respectively.

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

Sterility: 0.22 μm filtered

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

Application Details

Restrictions: For Research Use only

Handling

Format: Lyophilized

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

Handling Advice: Please avoid repeated freeze-thaw cycles.

Storage: -20 °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.

Target Details

Target: SARS-CoV-2 Spike

Abstract: SARS-CoV-2 Spike Products

Synonyms: E2 Protein, E2 glycoprotein precursor Protein, Surface Glycoprotein Protein, S Protein

Target Type: Viral Protein

Background: 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.

Molecular Weight: 137.8 kDa