title: 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.
authors.affiliation: Pacific Northwest National Laboratory, Richland, WA 99352, USA. yuri.gorby@pnl.gov
authors.forename: Yuri A
authors.initials: YA
authors.lastname: Gorby
authors.forename: Svetlana
authors.initials: S
authors.lastname: Yanina
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: McLean
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Rosso
authors.forename: Dianne
authors.initials: D
authors.lastname: Moyles
authors.forename: Alice
authors.initials: A
authors.lastname: Dohnalkova
authors.forename: Terry J
authors.initials: TJ
authors.lastname: Beveridge
authors.forename: In Seop
authors.initials: IS
authors.lastname: Chang
authors.forename: Byung Hong
authors.initials: BH
authors.lastname: Kim
authors.forename: Kyung Shik
authors.initials: KS
authors.lastname: Kim
authors.forename: David E
authors.initials: DE
authors.lastname: Culley
authors.forename: Samantha B
authors.initials: SB
authors.lastname: Reed
authors.forename: Margaret F
authors.initials: MF
authors.lastname: Romine
authors.forename: Daad A
authors.initials: DA
authors.lastname: Saffarini
authors.forename: Eric A
authors.initials: EA
authors.lastname: Hill
authors.forename: Liang
authors.initials: L
authors.lastname: Shi
authors.forename: Dwayne A
authors.initials: DA
authors.lastname: Elias
authors.forename: David W
authors.initials: DW
authors.lastname: Kennedy
authors.forename: Grigoriy
authors.initials: G
authors.lastname: Pinchuk
authors.forename: Kazuya
authors.initials: K
authors.lastname: Watanabe
authors.forename: Shun'ichi
authors.initials: S
authors.lastname: Ishii
authors.forename: Bruce
authors.initials: B
authors.lastname: Logan
authors.forename: Kenneth H
authors.initials: KH
authors.lastname: Nealson
authors.forename: Jim K
authors.initials: JK
authors.lastname: Fredrickson
mesh_terms: D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins / Q000235:genetics; D003574:Cytochrome c Group / Q000235:genetics; D004553:Electric Conductivity; D004583:Electrons; D005290:Ferric Compounds / Q000737:chemistry / Q000378:metabolism; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D016296:Mutagenesis; D009154:Mutation; D036103:Nanotechnology; D020592:Shewanella / Q000378:metabolism* / Q000648:ultrastructure*; D046939:Synechocystis / Q000378:metabolism
chemical_list: D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D003574:Cytochrome c Group; D005290:Ferric Compounds; C114590:omc A protein, Shewanella putrefaciens; C000499:ferric oxide; C092844:ferric oxyhydroxide; C433527:MtrC protein, Shewanella