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Binding curves of 9a and 9r with human ACE2 and SARS-CoV-2 spike RBD proteins by BLI binding kinetics assay. (A) and (B): Compounds 9a and 9r binding to SARS-CoV-2 spike RBD protein, respectively; (C) and (D): The interaction of 9a and 9r binding to human ACE2 protein, respectively.
