title: Effects of ISSo2 insertions in structural and regulatory genes of the trimethylamine oxide reductase of Shewanella oneidensis.
abstract: We have isolated three Shewanella oneidensis mutants specifically impaired in trimethylamine oxide (TMAO) respiration. The mutations arose from insertions of an ISSo2 element into torA, torR, and torS, encoding, respectively, the TMAO reductase TorA, the response regulator TorR, and the sensor TorS. Although TorA is not the sole enzyme reducing TMAO in S. oneidensis, growth analysis showed that it is the main respiratory TMAO reductase. Use of a plasmid-borne torE'-lacZ fusion confirmed that the TorS-TorR phosphorelay mediates TMAO induction of the torECAD operon.
authors.affiliation: Laboratoire de Chimie Bactérienne, Institut de Biologie Structurale et Microbiologie, Centre National de la Recherche Scientifique, 13402 Marseille Cedex 20, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Bordi
authors.forename: Chantal
authors.initials: C
authors.lastname: Iobbi-Nivol
authors.forename: Vincent
authors.initials: V
authors.lastname: Méjean
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Patte
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D001483:Base Sequence; D004251:DNA Transposable Elements; D029968:Escherichia coli Proteins; D015964:Gene Expression Regulation, Bacterial; D008969:Molecular Sequence Data; D016254:Mutagenesis, Insertional; D009154:Mutation; D009876:Operon; D010089:Oxidoreductases, N-Demethylating / Q000235:genetics* / Q000378:metabolism; D010101:Oxygen Consumption; D010770:Phosphotransferases; D020592:Shewanella / Q000235:genetics* / Q000378:metabolism; D015398:Signal Transduction; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D004251:DNA Transposable Elements; D029968:Escherichia coli Proteins; C089364:TorR protein, E coli; D014157:Transcription Factors; D010089:Oxidoreductases, N-Demethylating; C023186:trimethylamine dehydrogenase; D010770:Phosphotransferases; C103806:TorS protein, E coli