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Related Experiment Videos

Genome evolution and functional divergence in Yersinia.

Jianying Gu1, Jennifer L Neary, Maribel Sanchez

  • 1Department of Biology, College of Staten Island, City University of New York, Staten Island, NY 10314, USA.

Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
|July 14, 2006
PubMed
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This study compares Yersinia pestis and Yersinia pseudotuberculosis genomes, revealing genetic differences that explain the evolution of Y. pestis into a host-specific pathogen. Key gene families show significant divergence, illustrating this evolutionary jump.

Area of Science:

  • Microbiology
  • Genomics
  • Evolutionary Biology

Background:

  • The increasing availability of prokaryotic genomes aids in studying genome evolution.
  • Closely related bacterial genomes facilitate research into the evolution of pathogenesis.

Purpose of the Study:

  • To conduct a detailed genomic comparison between Yersinia pseudotuberculosis and three strains of Yersinia pestis.
  • To identify genetic changes contributing to the evolutionary transition from Y. pseudotuberculosis to Y. pestis.

Main Methods:

  • Comparative genomics of Yersinia pseudotuberculosis IP32593 and Yersinia pestis strains (CO92, KIM10, 91001).
  • Analysis of multigene families and gene divergence between species.

Main Results:

Related Experiment Videos

  • Identified 241-275 multigene families common to the studied organisms.
  • Found 2,568 genes identical in Y. pestis strains but different from Y. pseudotuberculosis.
  • Observed significant divergence in gene families like kinases, proteases, and transporters.

    • Conclusions:

    • Genetic changes in specific gene families illustrate the evolutionary leap from Y. pseudotuberculosis to Y. pestis.
    • The study highlights key molecular adaptations enabling Y. pestis to become an obligate host-borne pathogen.