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Electrochem commun. 2013 Jan 1;26:105-108. Epub 2012 Oct 23.

Direct Electrochemistry of Cytochrome bo Oxidase at a series of Gold Nanoparticles-Modified Electrodes.

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Laboratoire de Spectroscopie Vibrationnelle et Electrochimie des Biomolécules (Institut de Chimie-CNRS, UdS), 1 Rue Blaise Pascal 67008 STRASBOURG CEDEX, France.


New membrane-protein based electrodes were prepared incorporating cytochrome bo(3) from E. coli and gold nanoparticles. Direct electron transfer between the electrode and the immobilized enzymes was achieved, resulting in an electrocatalytic activity in presence of O(2). The size of the gold nanoparticles was shown to be important and smaller particles were shown to reduce the overpotential of the process.

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