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- Biotinylated HCoV-NL63 Spike protein, His, Avitag™ | SPN-H82E6
Acro Biosystems
Biotinylated HCoV-NL63 Spike protein, His, Avitag™ | SPN-H82E6
- SKU:
- SPN-H82E6
- UPC:
- MPN:
- Host:
- HEK293
- Molecule:
- Spike protein
- Species:
- HCoV-NL63
- Tag:
- His Tag & Avi Tag
Description
Biotinylated HCoV-NL63 Spike protein, His, Avitag™ | SPN-H82E6 | Acro Biosystems | SARS-CoV-2 Other Coronavirus Proteins
Synonym
Spike, S protein, Spike glycoprotein, S glycoprotein
Source
Biotinylated HCoV-NL63 Spike protein, His,Avitag (SPN-H82E6) is expressed from human 293 cells (HEK293). It contains AA Cys 19 - Pro 1296 (Accession # Q6Q1S2-1(SI 1052-1053 PP)). 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 SI 1052-1053 PP are introduced to stabilize the trimeric prefusion state of the spike protein.
Predicted N-terminus: Cys 19
Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 148.0 kDa. The protein migrates as 200-250 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Biotinylation
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
Biotin:Protein Ratio
The biotin to protein ratio is 0.5-1 as determined by the HABA assay.
Endotoxin
Less than 1.0 EU per μg by the LAL method.
Purity
>90% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
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