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Related Experiment Videos

Resistance gene capture.

D A Rowe-Magnus1, D Mazel

  • 1Unité de Programmation Moléculaire et Toxicologie Genétique (UPMTG) Centre National de Recherche Scientifique (CNRS) URA 1444 Département des Biotechnologies Institut Pasteur 25 rue du Dr Roux, 75724, Paris, France.

Current Opinion in Microbiology
|October 6, 1999
PubMed
Summary
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Integrons: natural tools for bacterial genome evolution.

Current opinion in microbiology·2001

Integrons drive antibiotic resistance in Gram-negative bacteria. Super-integrons in bacterial genomes are now understood to be the origin of mobile, multi-resistant integrons, impacting evolution.

Area of Science:

  • Microbiology
  • Genomics
  • Evolutionary Biology

Background:

  • Integrons are key genetic elements responsible for acquiring and spreading antibiotic resistance genes.
  • These elements are particularly significant in Gram-negative bacteria.
  • The discovery of super-integrons within bacterial genomes has broadened our understanding of their functions.

Purpose of the Study:

  • To elucidate the role of super-integrons in bacterial genome evolution.
  • To investigate the relationship between super-integrons and mobile multi-resistant integrons.

Main Methods:

  • Genomic analysis of bacterial species harboring super-integron structures.
  • Comparative genomics to identify mobile integron origins.

Main Results:

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  • Super-integron structures are prevalent in several bacterial species.
  • Evidence suggests super-integrons serve as the source for mobile multi-resistant integrons.
  • This finding expands the known role of integrons in bacterial genome dynamics.

Conclusions:

  • Super-integrons play a crucial role in bacterial genome evolution.
  • They are the likely progenitors of mobile integrons, facilitating the spread of antibiotic resistance.