The RpoS sigma factor in the dissimilatory Fe(III)-reducing bacterium Geobacter sulfurreducens.
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.
Núñez
Cinthia
C
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA. cinthia@ibt.unam.mx
Adams
Lorrie
L
Childers
Susan
S
Lovley
Derek R
DR
D000222:Adaptation, Physiological; D001426:Bacterial Proteins / Q000235:genetics* / Q000502:physiology*; D001483:Base Sequence; D005290:Ferric Compounds / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D045302:Geobacter / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism / Q000502:physiology*; D008969:Molecular Sequence Data; D009154:Mutation; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D012808:Sigma Factor / Q000235:genetics* / Q000502:physiology*; D024363:Transcription Initiation Site
D001426:Bacterial Proteins; D005290:Ferric Compounds; D012808:Sigma Factor; C069567:sigma factor KatF protein, Bacteria