Increased bile resistance in Salmonella enterica mutants lacking Prc periplasmic protease

Authors

  • Sara B. Hernández Department of Genetics, School of Biology, University of Sevilla, Sevilla
  • Juan A. Ayala Center of Molecular Biology Severo Ochoa, CSIC-Autonomous University of Madrid, Cantoblanco
  • Gadea Rico-Pérez National Center of Biotechnology (CNB)-CSIC, Madrid
  • Francisco García-del Portillo National Center of Biotechnology (CNB)-CSIC, Madrid
  • Josep Casadesús Departamento de Genética, Facultad de Biología Universidad de Sevilla

Keywords:

Salmonella, bile, Prc protease, peptidoglycan, penicillin-binding proteins

Abstract

Prc is a periplasmic protease involved in processing of penicillin-binding protein 3 (PBP3). Lack of Prc suppressesbile sensitivity in Dam-, Wec-, PhoP-, DamX-, and SeqA- mutants of Salmonella enterica, and increases bile resistance in thewild type. Changes in the activity of penicillin binding proteins PBP3, PBP4, PBP5/6 and PBP7 are detected in a Prc-background, suggesting that peptidoglycan remodeling might contribute to bile resistance. [Int Microbiol 2013; 16(2):87-92]


Keywords: Salmonella; bile; Prc protease; peptidoglycan; penicillin-binding proteins

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