Sensitivity of sup35 and sup45 suppressor mutants in Saccharomyces cerevisiae to the anti-microtubule drug benomyl

Curr Genet. 1996 Jun;30(1):44-9. doi: 10.1007/s002940050098.


SUP35 and SUP45 genes determine the accuracy of translation at the stage of termination. We present indirect evidence indicating that these genes may also control some cellular process mediated by microtubules. A majority of sup35 and sup45 suppressor mutations confer supersensitivity to benomyl, the drug which de-polymerizes microtubules. In addition, data correlating phenotypic manifestations of sup45 suppressor mutations, involving sensitivity to benomyl, respiratory deficiency and a suppressor effect, are also presented.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benomyl / pharmacology*
  • Drug Resistance, Microbial / genetics
  • Fungicides, Industrial / pharmacology
  • Genes, Fungal*
  • Genes, Suppressor*
  • Microtubules / drug effects
  • Microtubules / metabolism
  • Mutation*
  • Oxygen Consumption / drug effects
  • Phenotype
  • Saccharomyces cerevisiae / drug effects*
  • Saccharomyces cerevisiae / genetics*
  • Saccharomyces cerevisiae / metabolism


  • Fungicides, Industrial
  • Benomyl