Reevaluation of the promoter structure of the class 3 flagellar operons of Escherichia coli and Salmonella

Nobuyuki Ide, Tadayoshi Ikebe, Kazuhiro Kutsukake

Research output: Contribution to journalArticle

43 Citations (Scopus)


Flagellar class 3 operons of Escherichia coli and Salmonella are transcribed by RNA polymerase containing σ28. The consensus sequence of the σ28-dependent promoters was believed to be TAAA N15 GCCGATAA. In this study, we found that the E. coli genome contains a large number of sequences homologous to this consensus. However, we showed that they do not always exert a σ28-dependent promoter activity. We compare more carefully the sequences of the class 3 flagellar promoters and propose a revised structure of the σ28-dependent promoters as TAAAGTTT N11 GCCGATAA.

Original languageEnglish
Pages (from-to)113-116
Number of pages4
JournalGenes and Genetic Systems
Issue number3
Publication statusPublished - Jun 1999
Externally publishedYes


ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Genetics
  • Genetics(clinical)

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