A. Dissociation constants for interactions between NlpI with MepM, MepS, PBP4, PBP7 as determined by Microscale thermophoresis (MST). The values are mean ± standard deviation of three independent experiments. B. MepS-NlpI interaction by MST as an example plot for Fig 2A. MST curve plotted is the mean data +/- SD of three independent experiments. Fl, fluorescently labelled; FNorm, normalized fluorescence. 