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The genetics of cell cycle checkpoints

A W Murray1

  • 1Department of Physiology, University of California at San Francisco 94143-0444, USA.

Current Opinion in Genetics & Development
|February 1, 1995
PubMed

Insights

Cell cycle checkpoints prevent genetic damage by allowing DNA repair before cell division. Studies in yeast identified key checkpoint genes involved in cell cycle regulation and signal transduction.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cell Biology

Background:

  • Cell cycle checkpoints are crucial for preventing genetic damage.
  • These checkpoints allow cells time for DNA repair before cell cycle progression.
  • Genetic studies in yeast have identified numerous cell cycle checkpoint genes.

Purpose of the Study:

  • To summarize the role of cell cycle checkpoints in preventing genetic damage.
  • To highlight findings from genetic analyses of cell cycle checkpoint genes in yeast.
  • To discuss the involvement of signal transduction pathways in checkpoint mechanisms.

Main Methods:

  • Genetic analyses in budding and fission yeast.
  • Identification and characterization of cell cycle checkpoint genes.
  • Analysis of protein functions, including kinases and 14-3-3 proteins.

Main Results:

  • Numerous cell cycle checkpoint genes were identified in yeast.
  • Several identified genes encode proteins involved in signal transduction pathways.
  • Checkpoints are vital in fission yeast for preventing premature entry into mitosis.

Conclusions:

  • Cell cycle checkpoints are essential for maintaining genomic integrity.
  • Yeast genetic studies have provided significant insights into checkpoint mechanisms.
  • Understanding these pathways is key to comprehending cell cycle regulation.

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