FIG. 5.
The EC50 of hits from high-throughput screening. Dose-response experiments for the hits from the screen and the small-molecule GyrB inhibitor Vertex-13 were performed using the fluorescence polarization (FP) assay to monitor the inhibition of the binding of 40 nM Novo-TRX to 40 nM GyrB. The average FP signal for each quadruplicate was calculated and normalized to the DMSO control sample. The error bars represent standard deviation of 4 replicates. The EC50 values were determined using the sigmoidal dose-response equation in GraphPad Prism 4.