title: Current production and metal oxide reduction by Shewanella oneidensis MR-1 wild type and mutants.
abstract: Shewanella oneidensis MR-1 is a gram-negative facultative anaerobe capable of utilizing a broad range of electron acceptors, including several solid substrates. S. oneidensis MR-1 can reduce Mn(IV) and Fe(III) oxides and can produce current in microbial fuel cells. The mechanisms that are employed by S. oneidensis MR-1 to execute these processes have not yet been fully elucidated. Several different S. oneidensis MR-1 deletion mutants were generated and tested for current production and metal oxide reduction. The results showed that a few key cytochromes play a role in all of the processes but that their degrees of participation in each process are very different. Overall, these data suggest a very complex picture of electron transfer to solid and soluble substrates by S. oneidensis MR-1.
authors.affiliation: Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, USA.
authors.forename: Orianna
authors.initials: O
authors.lastname: Bretschger
authors.forename: Anna
authors.initials: A
authors.lastname: Obraztsova
authors.forename: Carter A
authors.initials: CA
authors.lastname: Sturm
authors.forename: In Seop
authors.initials: IS
authors.lastname: Chang
authors.forename: Yuri A
authors.initials: YA
authors.lastname: Gorby
authors.forename: Samantha B
authors.initials: SB
authors.lastname: Reed
authors.forename: David E
authors.initials: DE
authors.lastname: Culley
authors.forename: Catherine L
authors.initials: CL
authors.lastname: Reardon
authors.forename: Soumitra
authors.initials: S
authors.lastname: Barua
authors.forename: Margaret F
authors.initials: MF
authors.lastname: Romine
authors.forename: Jizhong
authors.initials: J
authors.lastname: Zhou
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Beliaev
authors.forename: Rachida
authors.initials: R
authors.lastname: Bouhenni
authors.forename: Daad
authors.initials: D
authors.lastname: Saffarini
authors.forename: Florian
authors.initials: F
authors.lastname: Mansfeld
authors.forename: Byung-Hong
authors.initials: BH
authors.lastname: Kim
authors.forename: James K
authors.initials: JK
authors.lastname: Fredrickson
authors.forename: Kenneth H
authors.initials: KH
authors.lastname: Nealson
mesh_terms: D004579:Electron Transport; D005290:Ferric Compounds / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D017895:Manganese Compounds / Q000378:metabolism*; D009154:Mutation; D010084:Oxidation-Reduction; D010087:Oxides / Q000378:metabolism*; D020592:Shewanella / Q000201:enzymology / Q000235:genetics* / Q000378:metabolism*
chemical_list: D005290:Ferric Compounds; D017895:Manganese Compounds; D010087:Oxides