title: Influence of carbon catabolite repression on the G1 arrest of Saccharomyces cerevisiae MATa cells by alpha factor.
abstract: Cells of the yeast Saccharomyces cerevisiae of the a mating type were arrested at the G1 phase of the cell division cycle after treatment with alpha factor in a culture medium containing a high concentration (2%, w/v, or higher) of a catabolite-repressing sugar. In media containing either a lower concentration of sugar or a non-fermentable carbon source, the extent of G1 arrest induced by the pheromone was reduced or became undetectable. Under catabolite-derepressing conditions alpha factor was inactivated by a cells at a higher rate than that found in repressing media. These results indicate the existence of a close correlation between the action of alpha factor on a cells and conditions of catabolite repression or derepression. A joint mechanism of action of alpha factor and catabolite-repressing carbon sources on a cells is postulated.
mesh_terms: D004794:Enzyme Repression; D005632:Fructose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D005990:Glycerol / Q000378:metabolism; D006026:Glycoside Hydrolases / Q000378:metabolism; D007399:Interphase / Q000187:drug effects*; D000072235:Mating Factor; D010455:Peptides / Q000494:pharmacology*; D011773:Pyruvates / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism; D043324:beta-Fructofuranosidase
chemical_list: D010455:Peptides; D011773:Pyruvates; D005632:Fructose; D000072235:Mating Factor; D006026:Glycoside Hydrolases; D043324:beta-Fructofuranosidase; D005947:Glucose; D005990:Glycerol