This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 76.9 kDa. The protein migrates as 100-140 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
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:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
SARS-CoV-2 S1 protein, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
Loaded Human ACE2, Fc Tag (Cat. No. AC2-H5257) on Protein A Biosensor, can bind SARS-CoV-2 S1 protein, His Tag (Cat. No. S1N-C52H3) with an affinity constant of 21.8 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Loaded Biotinylated Human Neuropilin-1, His,Avitag (Cat. No. NR1-H82E3) on SA Biosensor, can bind SARS-CoV-2 S1 protein, His Tag (Cat. No. S1N-C52H3) with an affinity constant of 0.663 μM as determined in BLI assay (ForteBio Octet Red96e)
Authors: Lucas C, Klein J, Sundaram ME, et al.
Journal: Nature medicine 2021
Authors: Song E, Bartley CM, Chow RD, et al.
Journal: Cell reports. Medicine 2021
Authors: Dong J, Huang B, Wang B, et al.
Journal: Scientific reports 2021
Authors: Sakharkar M, Rappazzo CG, Wieland-Alter WF, et al.
Journal: Science immunology 2021
Application: Binding Assay
Authors: Wei C, Wan L, Yan Q, et al.
Journal: Nature metabolism 2020
Application: SPR & FACS & Confocal microscopy
Authors: Luetkens T, Metcalf R, Planelles V, et al.
Journal: Blood advances 2020
Authors: Pierce CA, Preston-Hurlburt P, Dai Y, et al.
Journal: Sci Transl Med 2020
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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High quality SARS-CoV-2 S protein, S1 protein and human ACE2 protein based on the human cell expression platform of HEK293.
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