Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganisms
Abstract
Shewanella oneidensis MR-1 produced electrically conductive pilus-like appendages called bacterial nanowires in direct response to electron-acceptor limitation. Mutants deficient in genes for c -type decaheme cytochromes MtrC and OmcA, and those that lacked a functional Type II secretion pathway displayed nanowires that were poorly conductive. These mutants were also deficient in their ability to reduce hydrous ferric oxide and in their ability to generate current in a microbial fuel cell. Nanowires produced by the oxygenic phototrophic cyanobacterium Synechocystis PCC6803 and the thermophilic, fermentative bacterium Pelotomaculum thermopropionicum reveal that electrically conductive appendages are not exclusive to dissimilatory metal-reducing bacteria and may, in fact, represent a common bacterial strategy for efficient electron transfer and energy distribution.
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The mesoporous structure of CA anode enables bacteria to stretch into the porous surface and channel of the electrode and form a 3D network structure inside the CA, enhancing the direct contact-based EET and the stability of microbial attachment.
“First, the mesoporous structure of CA anode enables bacteria to stretch into the porous surface and channel of the electrode [48] and form a 3D network structure inside the CA, enhancing the direct based-contact EET and the stability of microbial attachment.”
From Self-supported microbial carbon aerogel bioelectrocatalytic anode promoting extracellular electron transfer for efficient hydrogen evolution (2019) · cites this paper as [48]
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- Authors
- Gorby, Y. A., Yanina, S., McLean, J. S., Rosso, K. M., Moyles, D., Dohnalkova, A., Beveridge, T. J., Chang, I. S., Kim, B. H., Kim, K. S., Culley, D. E., Reed, S. B., Romine, M. F., Saffarini, D. A., Hill, E. A., Shi, L., Elias, D. A., Kennedy, D. W., Pinchuk, G., Watanabe, K., Ishii, S., Logan, B., Nealson, K. H., & Fredrickson, J. K.
- Affiliations
- Pacific Northwest National Laboratory (US)
- University of Guelph (CA)
- Gwangju Institute of Science and Technology (KR)
- Korea Institute of Science and Technology (KR)
- Department of Biological Sciences, University of Wisconsin, Milwaukee, WI 53211;
- Marine Biotechnology Institute, Heita, Kamaishi, Iwate 026-0001, Japan;
- Pennsylvania State University (US)
- University of Southern California (US)
- ORCID
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2006-07-25
- Volume
- 103
- Issue
- 30
- Pages
- 11358-11363
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2144465161
- Cited by
- 1,749
- References
- 0
- Citations by year
- 2026: 38 · 2025: 50 · 2024: 68 · 2023: 73 · 2022: 62 · 2021: 69 · 2020: 101 · 2019: 95 · 2018: 96 · 2017: 91 · 2016: 89 · 2015: 118 · 2014: 114 · 2013: 102 · 2012: 124
- FWCI
- 104.06
- Type
- journal article
- Language
- en
- Update notices
- correction (2009-06-09)
- Open access
- closed
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Energy (DE-AC05–76RL01830, 76RL01830, AC05-76RL01830, DE-AC05?, Contract DE-AC05-76RL01830)
- Battelle (AC05-76RL01830, DE- AC05-76RL01830, DE-AC05)
- Korea Institute of Science and Technology
- Biological and Environmental Research (DE-AC05-76 RL01830, AC05-76RL01830, 76RL01830)
- Pacific Northwest National Laboratory (DEAC0576RL01830, 76RL01830)
- Topics
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Keywords
- bacterial nanowires, Shewanella oneidensis MR-1, electron transfer, c-type cytochromes, MtrC, OmcA, type II secretion system, microbial fuel cells, Synechocystis sp. PCC 6803
- MeSH terms
- Bacterial Outer Membrane Proteins, Bacterial Proteins, Cytochrome c Group, Electric Conductivity, Electrons, Ferric Compounds, Microscopy, Electron, Scanning, Mutation, Mutagenesis, Shewanella, Nanotechnology, Microscopy, Electron, Transmission, Synechocystis
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