DNA binding activity of the Escherichia coli nitric oxide sensor NorR suggests a conserved target sequence in diverse proteobacteria

Nicholas P Tucker, Benoît D'Autréaux, David J Studholme, Stephen Spiro, Ray Dixon

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The Escherichia coli nitric oxide sensor NorR was shown to bind to the promoter region of the norVW transcription unit, forming at least two distinct complexes detectable by gel retardation. Three binding sites for NorR and two integration host factor binding sites were identified in the norR-norV intergenic region. The derived consensus sequence for NorR binding sites was used to search for novel members of the E. coli NorR regulon and to show that NorR binding sites are partially conserved in other members of the proteobacteria.
Original languageEnglish
Pages (from-to)6656-6660
Number of pages5
JournalJournal of Bacteriology
Issue number19
Publication statusPublished - 2004


  • amino acid sequence
  • binding sites
  • conserved sequence
  • DNA
  • escherichia coli proteins
  • molecular sequence data
  • nitric oxide
  • proteobacteria
  • trans-activators

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