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Product Details
Synonyms
Spike, S1 protein, Spike glycoprotein Subunit1, S glycoprotein Subunit1, Spike protein S1
Source
SARS-CoV-2 Spike S1, His Tag (S1N-C52Hu) is expressed from human 293 cells (HEK293). It contains AA Val 16 - Arg 685 (Accession # QHD43416.1). The mutations (T19R, G142D, EF156-157del, R158G, L452R, T478K, D614G, P681R) were identified in the SARS-CoV-2 Delta variant (Pango lineage: B.1.617.2; other names: 21A/S:478K).
Predicted N-terminus: Val 16
Request for sequenceMolecular Characterization
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 76.7 kDa. The protein migrates as 100-120 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Endotoxin
Less than 1.0 EU per μg by the LAL method / rFC method.
Purity
>95% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
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.
Shipping and Storage
This product is shipped at ambient temperature.
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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Data Display
SDS-PAGE
SARS-CoV-2 Spike S1, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
Bioactivity-ELISA
Immobilized SARS-CoV-2 Spike S1, His Tag (Cat. No. S1N-C52Hu) at 2 μg/mL (100 μL/well) can bind Human ACE2, Fc Tag (Cat. No. AC2-H5257) with a linear range of 0.2-4 ng/mL (QC tested).
Protocol
Immobilized SARS-CoV-2 Spike S1, His Tag (Cat. No. S1N-C52Hu) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike RBD Antibody, Chimeric mAb, Human IgG1 (Cat. No. S1N-M122) with a linear range of 0.2-3 ng/mL (Routinely tested).
Protocol
Immobilized Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 2 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike S1, His Tag (Cat. No. S1N-C52Hu) with a linear range of 0.039-0.625 μg/mL (Routinely tested).
Protocol
Immobilized Anti-SARS-CoV-2 Spike RBD Antibody, Chimeric mAb, Human IgG1 (Cat. No. S1N-M122) at 1 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike S1, His Tag (Cat. No. S1N-C52Hu) with a linear range of 0.2-13 ng/mL (Routinely tested).
Protocol
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