Figure 4.
Normalized open probability for KcsA in lipid bilayers of different composition compared with the respective downscan DSC analysis at pH 3 (shifted by −1.5°C). (a) POPE/POPG 1:1; (b) POPE/POPG 3:1. The normalized open probability NP0 (○, given as a mean together with its standard deviation) in arbitrary units referring to the right ordinate and the specific heat capacity (—) in arbitrary units referring to the left ordinate are reported. In both cases, the open probability had a trend inversion when the system entered the phase transition region.