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This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™)
The protein has a calculated MW of 139.5 kDa. The protein migrates as 160-200 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS with trehalose as protectant.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
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:
Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
The purity of Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag (Cat. No. SPN-C82Ei) is more than 85% and the molecular weight of this protein is around 619-687 kDa verified by SEC-MALS.
Immobilized Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag (Cat. No. SPN-C82Ei) at 1 μg/mL (100 μL/well) on streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate can bind Anti-SARS-CoV-2 Spike RBD Antibody, Chimeric mAb, Human IgG1 (Cat. No. S1N-M122) with a linear range of 0.1-2 ng/mL (QC tested).
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 Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag (Cat. No. SPN-C82Ei) with a linear range of 0.8-25 ng/mL (Routinely tested).
Immobilized Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 5 μg/mL (100 μL/well) can bind Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag (Cat. No. SPN-C82Ei) with a linear range of 2-125 ng/mL (Routinely tested).
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