Sigma S-dependent overexpression of ftsZ in an Escherichia coli K-12 rpoB mutant that is resistant to the division inhibitors DicB and DicF RNA.
The Escherichia coli genes dicF and dicB encode division inhibitors, which prevent the synthesis and activity, respectively, of the essential division protein FtsZ. A mutation at the C-terminal end of the RNA polymerase beta subunit renders cells resistant to both inhibitors. In the mutant strain the level of the ftsZ gene product is higher than in the wild type. Disruption of rpoS, which encodes the stationary phase sigma factor sigma S, lowers FtsZ protein levels in the mutant, and partially restores sensitivity to the inhibitors.
Cam
K
K
Laboratoire de Microbiologie et Génétique moléculaire, Centre National de la Recherche Scientifique, Toulouse, France.
Cuzange
A
A
Bouché
J P
JP
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000096:biosynthesis / Q000235:genetics*; D001483:Base Sequence; D002455:Cell Division / Q000235:genetics*; D002874:Chromosome Mapping; D003598:Cytoskeletal Proteins; D012321:DNA-Directed RNA Polymerases / Q000235:genetics; D004926:Escherichia coli / Q000166:cytology / Q000235:genetics*; D015964:Gene Expression Regulation, Bacterial / Q000235:genetics; D005798:Genes, Bacterial; D007122:Immunoelectrophoresis; D007544:Isopropyl Thiogalactoside / Q000494:pharmacology; D008969:Molecular Sequence Data; D009154:Mutation; D010641:Phenotype; D012808:Sigma Factor / Q000235:genetics*; D013489:Suppression, Genetic; D014158:Transcription, Genetic
D001426:Bacterial Proteins; D003598:Cytoskeletal Proteins; C071525:FtsZ protein, Bacteria; D012808:Sigma Factor; C069567:sigma factor KatF protein, Bacteria; D007544:Isopropyl Thiogalactoside; D012321:DNA-Directed RNA Polymerases