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- W2064200749 abstract "Very little information has been reported describing the heterogeneous electron transfer kinetics of biological molecules at electrodes. We report here the first application of a recently developed spectro-electrochemical technique to the measurement of the heterogeneous electron transfer kinetics of a biological molecule, sperm whale myoglobin, at a methyl viologen modified gold minigrid electrode. The overpotential dependence of the heterogeneous electron transfer rate constant for the reduction of myoglobin at this surface gives rise to values of the formal heterogeneous electron transfer rate constant [ko′f,h=3.88 (±0.07)×10−11 cm/s] and the transfer coefficient [α=0.88 (±0.01)] for this electrocatalyzed process. The importance of studying the heterogeneous electron transfer kinetics of biological molecules lies in the fact that many physiological electron transfer reactions occur heterogeneously. Though myoglobin does not function in this manner physiologically, our initial study has been directed at this molecule owing to its stability and ready availability. It is expected that this technique will be applied to other optically transparent electrodes and other biological molecules thereby providing new insights into understanding biological redox reactions." @default.
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- W2064200749 date "1980-01-01" @default.
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- W2064200749 title "Heterogeneous electron transfer kinetics of sperm whale myoglobin" @default.
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- W2064200749 doi "https://doi.org/10.1016/s0022-0728(80)80269-5" @default.
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