The Saccharomyces cerevisiae MEC1 gene, which encodes a homolog of the human ATM gene product, is required for G1 arrest following radiation treatment

Wolfram Siede, James B. Allen, Stephen J. Elledge, Errol C. Friedberg

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The Saccharomyces cerevisiae gene MEC1 represents a structural homolog of the human gene ATM mutated in ataxia telangiectasia patients. Like human ataxia telangiectasia cell lines, mec1 mutants are defective in G2 and S- phase cell cycle checkpoints in response to radiation treatment. Here we show an additional defect in G1 arrest following treatment with UV light or gamma rays and map a defective arrest stage at or upstream of START in the yeast cell cycle.

Original languageEnglish (US)
Pages (from-to)5841-5843
Number of pages3
JournalJournal of Bacteriology
Issue number19
Publication statusPublished - 1996


ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Immunology

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