Comparing data and fit for Δ<i>ainRS</i> mutants of the four LuxR variants.

<p>Each of panels (<i>A</i>)-(<i>D</i>) shows a representative luminescence dataset and fit for one of the Δ<i>ainRS</i> strains, where luminescence is measured as a function of C8-HSL and 3OC6-HSL concentration. The luminescence (vertical) axis for data is shown on a logarithmic scale. The lower figure of each group shows the residual on a logarithmic scale, <i>i</i>.<i>e</i>. the ratio <i>data/fit</i> is shown on a logarithmic scale. The set of parameter values obtained in 150 fits of 3 datasets for each LuxR are shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0126474#pone.0126474.g006" target="_blank">Fig 6</a> and summarized in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0126474#pone.0126474.t002" target="_blank">Table 2</a>.