ArticleJournal of bacteriology2011
Refining the binding of the Escherichia coli flagellar master regulator, FlhD4C2, on a base-specific level.
Article in Journal of bacteriology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- To Move or Not to Move: When and How Bacteria Suppress Flagellar Motility.Molecular microbiology · 2026Review
- Loss of the flagellar regulator FlhC changes the transcriptional response of plant-associatedISME communications · 2026Article
- Genomic SELEX Reveals Pervasive Role of the Flagella Master Regulator FlhDC in Carbon Metabolism.International journal of molecular sciences · 2023Article
- Article
- Crucial role of Salmonella genomic island 1 master activator in the parasitism of IncC plasmids.Nucleic acids research · 2021Article
- Plant Growth Promoting Potentials of Beneficial EndophyticTropical life sciences research · 2021Article
- Diverse Mechanisms and Circuitry for Global Regulation by the RNA-Binding Protein CsrA.Frontiers in microbiology · 2020Review
- Essential Role of σ Factor RpoF in Flagellar Biosynthesis and Flagella-Mediated Motility ofFrontiers in microbiology · 2019Article
- Salmonella STM1697 coordinates flagella biogenesis and virulence by restricting flagellar master protein FlhD4C2 from recruiting RNA polymerase.Nucleic acids research · 2017Article
- Transfer activation of SXT/R391 integrative and conjugative elements: unraveling the SetCD regulon.Nucleic acids research · 2015Article
- Loss of FliL alters Proteus mirabilis surface sensing and temperature-dependent swarming.Journal of bacteriology · 2015Article
- Comprehensive mapping of the Escherichia coli flagellar regulatory network.PLoS genetics · 2014Article
- Article
- Activity of Proteus mirabilis FliL is viscosity dependent and requires extragenic DNA.Journal of bacteriology · 2013Article
- The transcript from the σ(28)-dependent promoter is translationally inert in the expression of the σ(28)-encoding gene fliA in the fliAZ operon of Salmonella enterica serovar Typhimurium.Journal of bacteriology · 2011Article
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Authors and funding
4 authors.
Funding
Abstract
The Escherichia coli flagellar master regulator, FlhD(4)C(2), binds to the promoter regions of flagellar class II genes, yet, despite extensive analysis of the FlhD(4)C(2)-regulated promoter region, a detailed consensus sequence has not emerged. We used in vitro and in vivo experimental approaches to determine the nucleotides in the class II promoter, fliAp, required for the binding and function of FlhD(4)C(2). FlhD(4)C(2) protects 48 bp (positions -76 to -29 relative to the σ(70)-dependent transcriptional start site) in the fliA promoter. We divided the 48-bp footprint region into 5 sections to determine the requirement of each DNA segment for the binding and function of FlhD(4)C(2). Results from an in vitro binding competition assay between the wild-type FlhD(4)C(2)-protected fragment and DNA fragments possessing mutations in one section of the 48-bp protected region showed that only one-third of the 48 bp protected by FlhD(4)C(2) is required for FlhD(4)C(2) binding and fliA promoter activity. This in vitro binding result was also seen in vivo with fliA promoter-lacZ fusions carrying the same mutations. Only seven bases (A(12), A(15), T(34), A(36), T(37), A(44), and T(45)) are absolutely required for the promoter activity. Moreover, A(12), A(15), T(34), T(37), and T(45) within the 7 bases are highly specific to fliA promoter activity, and those bases form an asymmetric recognition site for FlhD(4)C(2). The implications of the asymmetry of the FlhD(4)C(2) binding site and its potential impact on FlhD(4)C(2) are discussed.
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