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Multiple bacteriocin production in lactic acid bacteria.

Rodney Honrada Perez1, Takeshi Zendo2, Kenji Sonomoto2

  • 1National Institute of Molecular Biology and Biotechnology (BIOTECH), University of the Philippines Los Baños (UPLB), Los Baños, Laguna 4031, Philippines.

Journal of Bioscience and Bioengineering
|August 4, 2022
PubMed
Summary

Novel lactic acid bacteria (LAB) strains can produce multiple bacteriocins by sharing biosynthetic machinery, enhancing their industrial utility. Understanding this mechanism is key to maximizing their potential as starter cultures and probiotics.

Keywords:
Antimicrobial peptidesBacteriocinBiosynthetic mechanismLactic acid bacteriaMultiple bacteriocin

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Area of Science:

  • Microbiology
  • Industrial Biotechnology
  • Genomics

Background:

  • Bacteriocin production is a desirable trait in lactic acid bacteria (LAB), enhancing their fitness and utility as starter cultures and probiotics.
  • Genomic research has identified novel LAB strains with the capacity to produce multiple bacteriocins, increasing their application potential.
  • Multiple bacteriocin production offers enhanced bacterial fitness and colonization capabilities in target environments.

Purpose of the Study:

  • To compile occurrences of multiple bacteriocin production in novel LAB strains.
  • To highlight the unique sharing mechanisms of the biosynthetic machinery in these strains.
  • To understand how these strains synthesize multiple bacteriocins to maximize their application potential.

Main Methods:

  • Review and compilation of existing genomic research on novel LAB strains.
  • Analysis of shared elements in the biosynthetic pathways for multiple bacteriocin production.
  • Identification of common quorum-sensing, maturation, and transport mechanisms.

Main Results:

  • Novel LAB strains exhibit the ability to produce multiple bacteriocins.
  • These strains utilize shared biosynthetic elements, including quorum-sensing systems and maturation/transport mechanisms, for producing multiple bacteriocins.
  • This shared machinery allows for efficient production without excessive energy expenditure.

Conclusions:

  • Multiple bacteriocin production in LAB is facilitated by shared biosynthetic machinery, contrary to the specificity assumption for biosynthetic enzymes.
  • Understanding these sharing mechanisms is crucial for leveraging the full application potential of these novel strains.
  • Further genotypic characterization is necessary to confirm the safety (virulence and pathogenicity) of these strains for industrial use.