Journal of Microbiology

The Microbiological Society of Korea (한국미생물학회)
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Quorum Sensing and Quorum-Quenching Enzymes

  • Dong, Yi-Hu (Institute of Molecular and Cell Biology) ;
  • Zhang, Lian-Hui (Institute of Molecular and Cell Biology, Department of Biological Sciences, The National University of Singapore)
  • Published : 2005.02.28
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Abstract

To gain maximal benefit in a competitive environment, single-celled bacteria have adopted a community genetic regulatory mechanism, known as quorum sensing (QS). Many bacteria use QS signaling systems to synchronize target gene expression and coordinate biological activities among a local population. N-acylhomoserine lactones (AHLs) are one family of the well-characterized QS signals in Gram-negative bacteria, which regulate a range of important biological functions, including virulence and biofilm formation. Several groups of AHL-degradation enzymes have recently been identified in a range of living organisms, including bacteria and eukaryotes. Expression of these enzymes in AHL-dependent pathogens and transgenic plants efficiently quenches the microbial QS signaling and blocks pathogenic infections. Discovery of these novel quorum quenching enzymes has not only provided a promising means to control bacterial infections, but also presents new challenges to investigate their roles in host organisms and their potential impacts on ecosystems.

Keywords

References

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