SARS-CoV-2 Spike S1 Protein (His Tag) is expressed from our HEK293 cells. The protein has a His tag.
The S protein of the SARS-COV-2 binds to the receptor of ACE2 protein on cell membrane, and then infects human respiratory epithelial cells. The observation under electron microscope confirmed the molecular mechanism of the infection. The specific binding to the receptor of ACE2 molecule is the receptor binding domain (RBD)located on the S1 Subunit of the S protein.