Figure 2.

(A–C) Temperature dependence of the free-energy barrier for formation of the (A) I₁ state ($\Delta G_1^{\ast }$), (B) I₂ state ($\Delta G_2^{\ast }$), and (C) FP state ($\Delta G_3^{\ast }$) at pH 5.0 (red) and pH 7.4 (green). Data were fitted to a third-order polynomial and the parameters are shown in Table S1. To see this figure in color, go online.