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Related Experiment Videos

A Candida albicans gene encoding a DNA ligase

E Andaluz1, G Larriba, R Calderone

  • 1Departamento de Microbiologia, F. Ciencias, Universidad de Extremadura, Badajoz, Spain.

Yeast (Chichester, England)
|July 1, 1996
PubMed
Summary

Researchers cloned the Candida albicans DNA ligase gene (Ca CDC9) by complementing a mutation in yeast. Sequence analysis revealed homology with other DNA ligases, advancing our understanding of DNA repair mechanisms.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Mycology

Background:

  • DNA ligases are essential enzymes for DNA replication, repair, and recombination.
  • Candida albicans is an opportunistic fungal pathogen with complex genetic regulation.
  • Understanding DNA replication and repair in C. albicans is crucial for developing antifungal strategies.

Purpose of the Study:

  • To clone and characterize the DNA ligase-encoding gene from Candida albicans.
  • To investigate the functional complementation of yeast mutations using C. albicans genes.
  • To identify potential therapeutic targets by understanding DNA repair pathways in C. albicans.

Main Methods:

  • Cloning of the Ca CDC9 gene from C. albicans via complementation of an ime-1 mutation in Saccharomyces cerevisiae.

Related Experiment Videos

  • Utilizing a S. cerevisiae strain with an ime2-promoter-lacZ gene fusion to assay IME1 function.
  • Screening a C. albicans genomic library transformed into S. cerevisiae using X-gal indicator.

    • Main Results:

    • Successful cloning of the Candida albicans DNA ligase gene, designated Ca CDC9.
    • Demonstration of functional complementation of the yeast ime-1 mutation by the C. albicans gene.
    • Sequence analysis revealed significant homology of Ca CDC9 with known ATP-dependent DNA ligases across various species.

    Conclusions:

    • The cloned gene Ca CDC9 encodes a functional DNA ligase in Candida albicans.
    • This finding provides a molecular tool for studying DNA replication and repair in C. albicans.
    • The homology suggests conserved mechanisms of DNA ligation across eukaryotes and prokaryotes.