Journal
CURRENT OPINION IN MICROBIOLOGY
Volume 66, Issue -, Pages 56-62Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.mib.2021.12.003
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- Marcus Edwards commenting on the manuscript.
- Biotechnology and Biological Sciences Research Council [BB/P01819X/1, BB/L023733/1]
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This article describes the EET pathways of the electrogenic bacteria Shewanella oneidensis and Geobacter sulferreducens, and compares the differences in their electron transfer mechanisms, which significantly impact substrate choice and bacterial lifestyle.
Extracellular electron transport (EET) is an important metabolic process used by many bacteria to remove excess electrons generated through cellular metabolism. However, there is still limited understanding about how the molecular mechanisms used to export electrons impact cellular metabolism. Here the EET pathways of two of the best-studied electrogenic organisms, Shewanella oneidensis and Geobacter sulferreducens, are described. Both organisms have superficially similar overall EET routes, but differ in the mechanisms used to oxidise menaquinol, transfer electrons across the outer membrane and reduce extracellular substrates. These mechanistic differences substantially impact both substrate choice and bacterial lifestyle.
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