Increased expression of a molecular chaperone GroEL in response to unsaturated fatty acids by the biohydrogenating ruminal bacterium, Butyrivibrio fibrisolvens

Estelle Devillard, Nicolas Andant, R. John Wallace

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Butyrivibrio fibrisolvens is the most active bacterial species in the biohydrogenation of polyunsaturated fatty acids (PUFA) in the rumen. It needs to remove the unsaturated bonds in order to detoxify the PUFA to enable the growth of the bacterium. Here, we investigated the response of cell membrane-associated proteins in B. fibrisolvens to growth in the presence of PUFA. Numerous changes were observed in the cell membrane-associated proteome. One of the main modifications occurring when the 18:2 fatty acids, linoleic acid and conjugated linoleic acid, were added, was an increased expression of the molecular chaperone GroEL.

Original languageEnglish
Pages (from-to)244-248
Number of pages5
JournalFEMS Microbiology Letters
Issue number2
Early online date2 Aug 2006
Publication statusPublished - Sep 2006


  • Butyrivibrio fibrisolvens
  • biohydrogenation
  • fatty acids
  • molecular chaperone
  • rumen bacteria
  • linoleic acid
  • protein
  • products

Cite this