Figure 2. Dependence of the voltage of half-maximal activation on internal pH. Mean values of V1/2 are plotted as a function of pH. Error bars indicate SD. The straight line has a slope of 46 ± 2 mV per pH unit, corresponding to 20 mV per e-fold change of the H+ concentration.
Image published in: Zifarelli G et al. (2008)
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