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Synonyms:

| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 5 μg | $250 | 7-10 days | 7-10 days | |
| 10 μg | $419 | 7-10 days | 7-10 days | |
| 20 μg | $812 | 7-10 days | 7-10 days |
| Bioactivity | Immobilized human ACE2 protein (Fc tag) at 2 μg/mL (100 μL/well) can bind Recombinant SARS-CoV-2 (BA.2.75) Spike S1+S2 trimer Protein(ECD, His&AVI Tag), the EC50 is 4-12 ng/mL. |
| Description | SARS-CoV-2 (BA.2.75) Spike S1+S2 trimer Protein (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with His and Avi tag. The predicted molecular weight is 138.33 kDa and the accession number is YP_009724390.1. |
| Species | SARS-CoV-2 |
| Expression System | HEK293 Cells |
| Tag | C-His-Avi |
| Accession Number | YP_009724390.1 |
| Construction | A DNA sequence encoding the SARS-CoV-2 (BA.2.75) Spike S1+S2 trimer (YP_009724390.1, with mutations T19I, L24del, P25del, P26del, A27S, G142D, K147E, W152R, F157L, I210V, V213G, G257S, G339H, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, G446S, N460K, S477N, T478K, E484A, Q498R, N501Y, Y505H, D614G, H655Y, N679K, P681H, N764K, D796Y, F817P, A892P, A899P, A942P, Q954H, N969K, K986P, V987P and furin cleavage site mutants) was expressed with bacteriophage T4 fibritin and a C-terminal polyhistidine tag followed by an AVI tag. The mutations were identified in the SARS-CoV-2 variant (known as variant BA.2.75).The expressed protein was biotinylated in vivo by the Biotin-Protein ligase (BirA enzyme) which is co-expressed. Predicted N terminal: Val 16 |
| Protein Purity | > 90 % as determined by SDS-PAGE. > 95 % as determined by SEC-HPLC. |
| Endotoxin | < 1.0 EU/μg of the protein as determined by the LAL method. |
| Formulation | Lyophilized from a sodium citrate buffer system at pH 6. 0.Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
| Reconstitution | A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information. |
| Stability & Storage | It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
| Shipping | In general, lyophilized powders are shipped with blue ice, while solutions are shipped with dry ice. |
| Research Background |
| Molecular Weight | 138.33 kDa (predicted) |
| Storage | Lyophilized powder: -20~-80°C for 1 year | Solution: -80°C for 6 months |
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