SARS-CoV-2 Spike Protein (B.1.617.2 - delta, Trimer) (His tag)
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- Target See all SARS-CoV-2 Spike Proteins
- SARS-CoV-2 Spike
- Protein Type
- Recombinant
- Biological Activity
- Active
- Protein Characteristics
- B.1.617.2 - delta, Trimer
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Origin
- SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Delta
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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.
- Top Product
- Discover our top product SARS-CoV-2 Spike Protein
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- Restrictions
- For Research Use only
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- 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
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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.
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- 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
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