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![ELISA: Recombinant SARS-CoV-2 Spike S1 His (C-Term) Protein [NBP2-90985] - Immobilized Recombinant SARS-COV-2 Spike S1 at 2ug/mL (100 uL/well) can bind Recombinant Human ACE2 with a linear range of 0.5-8.7 ng/mL.](http://images.novusbio.com/fullsize/Recombinant-SARS-CoV-2-Spike-S1-His-C-Term-Protein-ELISA-NBP2-90985-img0002.jpg "ELISA: Recombinant SARS-CoV-2 Spike S1 His (C-Term) Protein [NBP2-90985] - Immobilized Recombinant SARS-COV-2 Spike S1 at 2ug/mL (100 uL/well) can bind Recombinant Human ACE2 with a linear range of 0.5-8.7 ng/mL.")
![HPLC: Recombinant SARS-CoV-2 Spike S1 His (C-Term) Protein [NBP2-90985] - The purity of SARS-COV-2 Spike S1 Protein with His tag (Cat.NBP2-90985) was greater than 95% as determined by SEC-HPLC.](http://images.novusbio.com/fullsize/Recombinant-SARS-CoV-2-Spike-S1-His-C-Term-Protein-HPLC-NBP2-90985-img0003.jpg)
![SDS-Page: Recombinant SARS-CoV-2 Spike S1 His (C-Term) Protein [NBP2-90985] - Recombinant SARS-COV-2 Spike S1 Protein with His tag was determined by SDS-PAGE with Coomassie Blue, showing a band at 110-130 kDa.](http://images.novusbio.com/fullsize/Recombinant-SARS-CoV-2-Spike-S1-His-C-Term-Protein-SDS-Page-NBP2-90985-img0005.jpg)
![Surface Plasmon Resonance: Recombinant SARS-CoV-2 Spike S1 His (C-Term) Protein [NBP2-90985] - Immobilized Human ACE2 on COOH Chip, can bind SARS-COV-2 Spike S1 with an affinity constant of 11.4 nM as determined in a SPR assay.](http://images.novusbio.com/fullsize/Recombinant-SARS-CoV-2-Spike-S1-His-C-Term-Protein-Surface-Plasmon-Resonance-NBP2-90985-img0004.jpg)