Expression of the Pseudomonas aeruginosa uvrA gene is constitutive

Eusebi Rivera, Laura Vila, Jordi Barbé

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16 Citations (Scopus)

Abstract

By complementation of an Escherichia coli uvrA-defective mutant, the uvrA gene of Pseudomonas aeruginosa has been isolated from a genomic library. The nucleotide sequence of the promoter and the 5'-coding region of this gene have been determined. A P. aeruginosa SOS consensus region, which functions as a binding site for the LexA repressor molecule, was not present in the 629-bp upstream region of the cloned uvrA gene. Analysis of transcriptional fusions with the lacZ gene demonstrates that, contrary to what happens with its homologous gene of E. coli, the P. aeruginosa uvrA gene is not DNA damage-inducible. However, the uvrA protein must be functional in P. aeruginosa cells because an uvrA-defective mutant is extremely sensitive to UV radiation.
Original languageEnglish
Pages (from-to)149-155
JournalMutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
Volume377
DOIs
Publication statusPublished - 9 Jun 1997

Keywords

  • DNA damage
  • Pseudomonas aeruginosa
  • SOS system
  • uvrA gene

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