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Probiotics and Antimicrobial Proteins

, Volume 11, Issue 1, pp 325–331 | Cite as

Screening of the Enterocin-Encoding Genes and Their Genetic Determinism in the Bacteriocinogenic Enterococcus faecium GHB21

  • Mohamed MerzougEmail author
  • Khédidja Mosbahi
  • Daniel Walker
  • Nour-Eddine Karam
Article
  • 85 Downloads

Abstract

Enterococci are well-known for their ability to produce a variety of antimicrobial peptides called enterocins. Most of these enterocins withstand extreme conditions and are very effective against a broad spectrum of undesirable bacteria including some Gram-negative bacteria. The same enterococci strain can produce multiple enterocins simultaneously. The genetic determinants of these bacteriocins can either be located on plasmids or on bacterial chromosome. Digestion of Enterococcus faecium GHB21 plasmids with various restriction endonucleases suggests the presence of two plasmids named pGHB-21.1 and pGHB-21.2 whose respective sizes are ~ 10.0 kb and ~ 3.3 kb. The screening of enterocin-encoding genes among E. faecium GHB21 genome by PCR followed by amplicon sequencing indicated the presence of three different enterocin structural genes similar to entA, entB, and entP genes previously detected in other E. faecium strains. These enterocin genes were, subsequently, localized on the bacterial chromosome based on PCR-targeted screening using total DNA and plasmids of E. faecium GHB21 as separate templates.

Keywords

E. faecium GHB21 Plasmids PCR Enterocin genes Genetic determinism 

Notes

Funding

This work was funded by the Algerian Ministry of Higher Education and Scientific Research (MESRS), General Directorate for Scientific Research and Technological Development (DGRSDT), and the University of Glasgow.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical Approval

This article does not contain any studies with human participants or animals performed by any of the authors.

For this type of study, formal consent is not required.

This manuscript has not been published and is not under consideration for publication elsewhere.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Laboratoire de Biologie des Microorganismes et Biotechnologie, BP1524, Oran El MnaouerUniversité d’Oran 1 Ahmed Ben BellaOranAlgeria
  2. 2.Département des Sciences Agronomiques et BiotechnologieUniversité de ChlefChlefAlgeria
  3. 3.Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life SciencesfUniversity of GlasgowGlasgowUK

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