title: Cross talk in promoter recognition between six NarL-family response regulators of Escherichia coli two-component system.
abstract: Bacterial two-component system (TCS) is composed of the sensor kinase (SK) and the response regulator (RR). After monitoring an environmental signal or condition, SK activates RR through phosphorylation, ultimately leading to the signal-dependent regulation of genome transcription. In Escherichia coli, a total of more than 30 SK-RR pairs exist, each forming a cognate signal transduction system. Cross talk of the signal transduction takes place at three stages: signal recognition by SK (stage 1); RR phosphorylation by SK (stage 2); and target recognition by RR (stage 3). Previously, we analyzed the stage 2 cross talk between the whole set of E. coli SK-RR pairs and found that the cross talk takes place for certain combinations. As an initial attempt to identify the stage 3 cross talk at the step of target promoter recognition by RR, we analyzed in this study the cross-recognition of target promoters by six NarL-family RRs, EvgA, NarL, NarP, RcsB, UhpA, and UvrY. Results of both in vivo and in vitro studies indicated that the stage 3 cross talk takes place for limited combinations, in particular, including a multifactor-regulated ydeP promoter.
authors.affiliation: Department of Frontier Bioscience, Hosei University, Koganei, Tokyo, 185-8584, Japan.
authors.forename: Myu
authors.initials: M
authors.lastname: Yoshida
authors.affiliation: Research Institute of Micro-Nano Technology, Hosei University, Koganei, Tokyo, 184-0003, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Ishihama
authors.affiliation: Department of Frontier Bioscience, Hosei University, Koganei, Tokyo, 185-8584, Japan.|Research Institute of Micro-Nano Technology, Hosei University, Koganei, Tokyo, 184-0003, Japan.
authors.forename: Kaneyoshi
authors.initials: K
authors.lastname: Yamamoto
mesh_terms: D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D029968:Escherichia coli Proteins / Q000235:genetics / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D011401:Promoter Regions, Genetic; D014157:Transcription Factors / Q000378:metabolism
chemical_list: D004268:DNA-Binding Proteins; D029968:Escherichia coli Proteins; D014157:Transcription Factors; C069780:NarL protein, E coli