The RpoS sigma factor in the dissimilatory Fe(III)-reducing bacterium Geobacter sulfurreducens.

TitleThe RpoS sigma factor in the dissimilatory Fe(III)-reducing bacterium Geobacter sulfurreducens.
Publication TypeJournal Article
Year of Publication2004
AuthorsNúñez C, Adams L, Childers S, Lovley DR
JournalJ Bacteriol
Volume186
Issue16
Pagination5543-6
Date Published2004 Aug
ISSN0021-9193
KeywordsAdaptation, Physiological, Bacterial Proteins, Base Sequence, Ferric Compounds, Gene Expression Regulation, Bacterial, Genes, Bacterial, Geobacter, Molecular Sequence Data, Mutation, Oxidation-Reduction, Oxidative Stress, Sigma Factor, Transcription Initiation Site
Abstract

Geobacter sulfurreducens RpoS sigma factor was shown to contribute to survival in stationary phase and upon oxygen exposure. Furthermore, a mutation in rpoS decreased the rate of reduction of insoluble Fe(III) but not of soluble forms of iron. This study suggests that RpoS plays a role in regulating metabolism of Geobacter under suboptimal conditions in subsurface environments.

DOI10.1128/JB.186.16.5543-5546.2004
Alternate JournalJ. Bacteriol.
PubMed ID15292160