“Start” Mutants of Saccharomyces cerevisiae Are Suppressed in Carbon Catabolite-Derepressing Medium

Temperature-sensitive cell division “start” mutants cdc28, cdc36, cdc37, and cdc39 of the yeast Saccharomyces cerevisiae arrested cell division in the G1 phase of the cell cycle in glucose medium. I report here that cdc28, cdc36, and cdc39 mutants were suppressed when grown in carbon catabolite-derepressing medium.