SOS induction by stabilized topoisomerase IA cleavage complex occurs via the RecBCD pathway

J Bacteriol. 2008 May;190(9):3399-403. doi: 10.1128/JB.01674-07. Epub 2008 Feb 29.

Abstract

Accumulation of mutant topoisomerase I cleavage complex can lead to SOS induction and cell death in Escherichia coli. The single-stranded break associated with mutant topoisomerase I cleavage complex is converted to double-stranded break, which then is processed by the RecBCD pathway, followed by association of RecA with the single-stranded DNA.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • DNA Breaks, Double-Stranded
  • DNA Breaks, Single-Stranded
  • DNA Cleavage
  • DNA Topoisomerases, Type I / genetics
  • DNA Topoisomerases, Type I / metabolism*
  • DNA Topoisomerases, Type II / metabolism
  • Escherichia coli / enzymology
  • Escherichia coli / genetics*
  • Escherichia coli Proteins / genetics
  • Escherichia coli Proteins / metabolism*
  • Exodeoxyribonuclease V / genetics
  • Exodeoxyribonuclease V / metabolism*
  • Rec A Recombinases / genetics
  • SOS Response, Genetics*

Substances

  • Escherichia coli Proteins
  • Rec A Recombinases
  • Exodeoxyribonuclease V
  • exodeoxyribonuclease V, E coli
  • DNA Topoisomerases, Type I
  • DNA Topoisomerases, Type II