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. 2021 Sep 17;12:5506. doi: 10.1038/s41467-021-25777-z

Fig. 5. A second affinity maturation generates neutralizing agents with picomolar IC50.

Fig. 5

a Binding (y-axis, ELISA assay) of SR6 variants identified by the second affinity maturation and two previously reported nanobodies, Nb21 and Ty1 (x-axis). Nanobody concentrations are shown at the bottom. Data shown are two technical replicates, bar height: mean, circle: the value of each replicate. b Biolayer interferometry assay of SR6v15. Red traces: recorded sensorgrams, black traces: fitted curves. KD, Ka, and Kd values are the mean of five measurements. c Pseudovirus neutralization. % inhibition (y-axis) of different nanobodies (x-axis). Data shown are two technical replicates, bar height: mean, circle: the value of each replicate. d Dose–response curve for neutralization of pseudotyped lentiviral infection by nanobodies and nanobody-based agents. Markers: mean of three technical replicates, error bars: standard deviation. IC50 values are shown as mean ± standard deviation. Source data for a, c and d are provided in the Source Data file.