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Int J Food Microbiol. 2008 Dec 10;128(2):390-4. doi: 10.1016/j.ijfoodmicro.2008.08.004. Epub 2008 Aug 16.

Comparative study of the pln locus of the quorum-sensing regulated bacteriocin-producing L. plantarum J51 strain.

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1
Area de Bioquímica y Biología Molecular, Departamento de Agricultura y Alimentación, Universidad de La Rioja, Logroño, Spain.

Abstract

Lactobacillus plantarum J51 strain was isolated from a Rioja red wine and it showed bacteriocin activity against a wide range of lactic acid bacteria of oenological importance. These characteristics conferred L. plantarum J51 a high interest both in wine microbiology and in the study of bacteriocin production. In this work the bacteriocin production regulated under the "quorum-sensing" mechanism is observed and the pln locus of the bacteriocin-producing L. plantarum J51 is fully characterized. A 20,667 bp fragment was completely sequenced (GenBank accession number DQ340868), and showed five operons (plNC8betaalphac, plnLR-like, plnABCD, plnEFI, plnGHSTUVW) and a new region containing a putative operon with three new orfs that could encode a putative two-peptide bacteriocin.

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