Electrode assemblies composed of redox cascades from microbial respiratory electron transfer chains

Gates, Andrew J, Marritt, Sophie J, Bradley, Justin M, Shi, Liang, McMillan, Duncan G G, Jeuken, Lars J C, Richardson, David J and Butt, Julea N (2013) Electrode assemblies composed of redox cascades from microbial respiratory electron transfer chains. Biochemical Society Transactions, 41 (5). pp. 1249-1253. ISSN 1470-8752

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Abstract

Respiratory and photosynthetic electron transfer chains are dependent on vectorial electron transfer through a series of redox proteins. Examples include electron transfer from NapC to NapAB nitrate reductase in Paracoccus denitrificans and from CymA to Fcc3 (flavocytochrome c3) fumarate reductase in Shewanella oneidensis MR-1. In the present article, we demonstrate that graphite electrodes can serve as surfaces for the stepwise adsorption of NapC and NapAB, and the stepwise adsorption of CymA and Fcc3. Aspects of the catalytic properties of these assemblies are different from those of NapAB and Fcc3 adsorbed in isolation. We propose that this is due to the formation of NapC-NapAB and of CymA-Fcc3 complexes that are capable of supporting vectorial electron transfer.

Item Type: Article
Uncontrolled Keywords: cyma,fumarate reductase,napc,nitrate reductase,protein film voltammetry,quinone
Faculty \ School: Faculty of Science > School of Biological Sciences
Faculty of Science > School of Chemical Sciences and Pharmacy
Faculty of Science > School of Chemistry
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Depositing User: Pure Connector
Date Deposited: 23 Oct 2013 22:38
Last Modified: 11 Apr 2019 14:48
URI: https://ueaeprints.uea.ac.uk/id/eprint/43784
DOI: 10.1042/BST20130147

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