A surface-immobilized cytochrome c variant provides a pH-controlled molecular switch
2012
The K72A/K73H/K79A mutant of yeast iso-1-cytochrome c immobilized on a conductive substrate reversibly interconverts between the native-like, His-Met heme-ligated form and a His-His-ligated conformer with remarkably different redox and enzymatic properties. This transition is activated by changing the pH in a narrow range around neutrality.
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