Table 1.

Bell-Evans model parameters of RBD-ACE2 interactions

Receptor-ligand pairs	k0 (s−1)	γ (nm)
RBDCoV2 versus ACE2	0.047 ± 0.034	0.39 ± 0.05
RBDCoV1 versus ACE2	0.57 ± 0.39	0.41 ± 0.05
RBDCoV2 versus dgACE2	0.82 ± 0.72	0.42 ± 0.06
RBDCoV1 versus dgACE2	3.4 ± 2.2	0.37 ± 0.06

Uncertainties are the standard errors of the fits. dgACE2 represents deglycosylated ACE2 treated with PNGase F.