期刊
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
卷 85, 期 7, 页码 1572-1581出版社
OXFORD UNIV PRESS
DOI: 10.1093/bbb/zbab088
关键词
electrochemically active bacteria; extracellular electron transfer; Shewanella; biofilm; transcriptional regulation
类别
资金
- JSPS KAKENHI [18K05399, 21H02111]
- Sumitomo Foundation
- Grants-in-Aid for Scientific Research [18K05399, 21H02111] Funding Source: KAKEN
Electrochemically active bacteria (EAB) interact with electrodes via extracellular electron transfer (EET) pathways, dependent on carbon catabolism and respiration regulation, with biofilm formation being crucial for electric current generation.
Electrochemically active bacteria (EAB) interact electrochemically with electrodes via extracellular electron transfer (EET) pathways. These bacteria have attracted significant attention due to their utility in environmental-friendly bioelectrochemical systems (BESs), including microbial fuel cells and electrofermentation systems. The electrochemical activity of EAB is dependent on their carbon catabolism and respiration; thus, understanding how these processes are regulated will provide insights into the development of a more efficient BES. The process of biofilm formation by EAB on BES electrodes is also important for electric current generation because it facilitates physical and electrochemical interactions between EAB cells and electrodes. This article summarizes the current knowledge on EET-related metabolic and cellular functions of a model EAB, Shewanella oneidensis MR-1, focusing specifically on regulatory systems for carbon catabolism, EET pathways, and biofilm formation. Based on recent developments, the author also discusses potential uses of engineered S. oneidensis strains for various biotechnological applications.
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