Identification and characterization of an oleate hydratase-encoding gene from Bifidobacterium breve

  • Kerry Joan O'connell
  • , Mary O.Connell Motherway
  • , Alan A. Hennessey
  • , Florian Brodhun
  • , R. Paul Ross
  • , Ivo Feussner
  • , Catherine Stanton
  • , Gerald F. Fitzgerald
  • , Douwe Van Sinderen

Research output: Contribution to journalArticlepeer-review

Abstract

Bifidobacteria are common commensals of the mammalian gastrointestinal tract. Previous studies have suggested that a bifidobacterial myosin cross reactive antigen (MCRA) protein plays a role in bacterial stress tolerance, while this protein has also been linked to the biosynthesis of conjugated linoleic acid (CLA) in bifidobacteria. In order to increase our understanding on the role of MCRA in bifidobacteria we created and analyzed an insertion mutant of the MCRAencoding gene of B. breve NCFB 2258. Our results demonstrate that the MCRA protein of B. breve NCFB 2258 does not appear to play a role in CLA production, yet is an oleate hydratase, which contributes to bifidobacterial solvent stress protection.

Original languageEnglish
JournalBioengineered
Volume4
Issue number5
DOIs
Publication statusPublished - Sep 2013

Keywords

  • Bifidobacteria
  • Conjugated linoleic acid
  • Hydratase
  • Myosin cross reactive antigen
  • Probiotic

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