Figure 2
From: Evidence for the adaptation of protein pH-dependence to subcellular pH
Major ionisation zones in the pH-dependence of protein stability. A schematic diagram of the major ionisation regions in a plot of folding stability (ΔGFU) versus pH. Properties describing this pH-dependence, in the notional case of no protein unfolding over the pH range, are shown. Cysteine and tyrosine have been omitted from this figure since they are mostly unionised at physiological pH.