Journal
TRENDS IN BIOTECHNOLOGY
Volume 35, Issue 4, Pages 360-371Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibtech.2016.10.004
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Funding
- Novo Nordisk Foundation
- NNF Center for Biosustainability [Bioelectrochem. Systems] Funding Source: researchfish
- Novo Nordisk Fonden [NNF10CC1016517, NNF13OC0004665] Funding Source: researchfish
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Autotrophic microbes can acquire electrons from solid donors such as steel, other microbial cells, or electrodes. Based on this feature, bioprocesses are being developed for the microbial electrosynthesis (MES) of useful products from the greenhouse gas CO2. Extracellular electron-transfer mechanisms involved in the acquisition of electrons from metals by electrical microbially influenced corrosion (EMIC), from other living cells by interspecies electron transfer (IET), or from an electrode during MES rely on: (i) mediators such as H-2; (ii) physical contact through electron-transfer proteins; or (iii) mediator-generating enzymes detached from cells. This review explores the interactions of autotrophs with solid electron donors and their importance in nature and for biosustainable technologies.
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