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Electrochemical studies of cytochrome c disulfide at gold electrodes
1Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Ube, Japan.
Biophysical Chemistry
|June 17, 1999
Abstract:
The electrochemistry of disulfide in cytochrome c on gold electrodes was reported. The observed electrochemical response was used to explain why the electrochemical reaction of cytochrome c is irreversible at gold electrodes. Disulfide bonds in cytochrome c were strongly adsorbed onto the surface of gold electrodes and caused slow rate of electron transfer of the heme group. It was found that the presence of disulfides in cytochrome c was responsible for the lack of electrochemical response of the heme group on a gold electrode. The mechanisms for this effect were studied using electrochemistry and photoelectron spectroscopy.