Integration host factor binds to a unique class of complex repetitive extragenic DNA sequences in Escherichia coli

Amos B. Oppenheim, Kenneth E. Rudd, Itai Mendelson, Dinah Teff

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

Interspersed repeated DNA sequences are characteristic features of both prokaryotic and eukaryotic genomes. REP sequences are defined as conserved repetitive extragenic palindromic sequences and are found in Escherichia coli, Salmonella typhimurium and other closely related enteric bacteria. These REP sequences may participate in the folding of the bacterial chromosome. In this work we describe a unique class of 28 conserved complex REP clusters, about 100 bp long, in which two inverted REPs are separated by a singular integration host factor (IHF) recognition sequence. We term these sequences RIP (for repetitive IMF-binding palindromic) elements and demonstrate that IHF binds to them specifically. It is estimated that there are about 70 RIP elements in E. coli. Our analysis shows that the RIP elements are evenly distributed around the bacterial chromosome. The possible function of the RIP element is discussed.

Original languageEnglish (US)
Pages (from-to)113-122
Number of pages10
JournalMolecular Microbiology
Volume10
Issue number1
DOIs
StatePublished - Oct 1993

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

Fingerprint Dive into the research topics of 'Integration host factor binds to a unique class of complex repetitive extragenic DNA sequences in Escherichia coli'. Together they form a unique fingerprint.

  • Cite this