Comparisons of binding specificity among the mutated forms.

<p>Binding affinity to various ligands was compared using the quenching value (Q), as shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0029710#pone-0029710-g005" target="_blank">Figure 5</a>. Bars represent the means of three independent replicates, and error bars indicate standard error.