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Characterization of enterocin- and salivaricin-producing lactic acid bacteria from the mammalian gastrointestinal tract.

Authors
  • O'Shea, Eileen F
  • Gardiner, Gillian E
  • O'Connor, Paula M
  • Mills, Susan
  • Ross, R Paul
  • Hill, Colin
Type
Published Article
Journal
FEMS Microbiology Letters
Publisher
Oxford University Press
Publication Date
Feb 01, 2009
Volume
291
Issue
1
Pages
24–34
Identifiers
DOI: 10.1111/j.1574-6968.2008.01427.x
PMID: 19076236
Source
Medline
License
Unknown

Abstract

Bacteriocin production may be a factor contributing to bacterial dominance within complex microbial populations and may therefore be a common trait within the gut microbiota. However, of 278 antimicrobial-producing culturable lactic acid bacteria (LAB) isolated from a range of mammalian intestinal sources in this study, characterization revealed just 23 distinct strains producing bacteriocin-like inhibitory substances and one Streptococcus hyointestinalis strain producing a potentially novel protease-insensitive antimicrobial. Three class II bacteriocins previously isolated from intestinal-derived LAB were identified as enterocin A and two salivaricin P-like bacteriocins. Moreover, this is the first report of intestinal-derived Streptococcus salivarius producing variants of the lantibiotic salivaricin A.

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