B Ribbon representation of the Re9F06⋅RBD⋅Re5D06 complex as in A, but with RBD-bound ACE2 shown as a semitransparent brown surface. Docking of ACE2 is based on the alignment of the RBD with the SARS-CoV-2 RBD⋅ACE2 complex (PDB ID 7KMS (Zhou et al., 2020b); RMSD=0.986 Å). Note the clash of ACE2 with Re5D06 and Re9F06. 