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. 2021 Jul 27;7:57. doi: 10.1038/s41421-021-00295-w

Table 3.

Summary of ten selected antibodies.

mAbs Predicted epitope Binding EC50 (nM) KD (nM) Blocking IC50 (nM) Pseudovirus neutralization IC50 (ng/mL) Authentic virus PRNT IC50 (ng/mL)
S1 RBD S1 Inhibition max (%) RBD Inhibition max (%)
3A9 RBD-2 0.038 0.042 N.D. 1.74 57 2.76 72 93 1541
1F2 RBD-1 0.068 0.048 39.4 4.34 92 2.65 98 40 25
1D10 RBD-1 0.115 0.054 N.D. 13.32 85 4.91 84 73 85
1B6 RBD-1 0.047 0.043 11.3 3.88 94 3.25 99 12 18
1H8 RBD-1 0.054 0.035 18.7 5.76 94 3.6 96 20 35
2B11 RBD-1 0.051 0.047 4.76 2.79 95 1.96 99 6 1
1D7 RBD-1 0.092 0.055 24.2 7.8 91 4.1 92 30 34
2A2 RBD-1 0.201 0.067 1070 N.A. N.A. 4.85 93 705 1178
1E10 RBD-2 0.029 0.044 N.D. N.A. N.A. N.A. N.A. 94 21
1B10 RBD-1 0.27 0.053 N.D. N.A. N.A. 7.83 90 112 79

KD dissociation constant at equilibrium, N.D. not detectable, N.A. no appreciable.

Epitope were predicted by Epitope binning via bio-layer interferometry. EC50 and IC50 were calculated by fitting to a four-parameter logistic curve with GraphPad Prism Version 8.0.1.