Open AccessUnderstanding the Properties of Phenazine Mediators that Promote Extracellular Electron Transfer in Escherichia coli
Author(s) -
Olja Simoska,
Erin M. Gaffney,
Koun Lim,
Kevin Beaver,
Shelley D. Minteer
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/abe52d
Subject(s) - mediator , phenazine , escherichia coli , electron transfer , extracellular , redox , bacteria , chemistry , electrochemistry , biophysics , electron transport chain , nanotechnology , microbiology and biotechnology , biochemistry , biology , materials science , electrode , photochemistry , inorganic chemistry , genetics , gene
The ability to establish successful and efficient extracellular electron transfer (EET) between bacteria and electrode surfaces is critical for the development of mediated microbial electrochemical technologies. Here, we describe a phenazine-based mediator system to facilitate electron transfer from the model bacterium Escherichia coli during glucose metabolism. Phenazine redox mediators were experimentally evaluated, demonstrating distinct mediated currents, dependent on mediator structure. Our results show that the choice of a mediator with the appropriate redox potential is not the single aspect to consider when rationally designing future mediator-based EET systems.