title: Studies on the regulation of X-prolyl dipeptidyl aminopeptidase activity.
abstract: The specific activity of X-prolyl-dipeptidyl aminopeptidase in Saccharomyces cerevisiae grown on glucose-containing medium remains constant during exponential growth and increases less than twofold when cells reach the stationary phase. In cells harvested from exponential growth on glucose-containing medium the specific activity of the enzyme is found to be 20-30% lower than the specific activity observed in media without glucose, containing acetate or ethanol as the carbon source. X-Prolyl-dipeptidyl aminopeptidase is not inactivated after the addition of glucose to stationary phase cells. Growth of the yeast on poor nitrogen sources or under nitrogen-starvation results in a three- to fourfold increase in the level of the enzyme.
mesh_terms: D018819:Dipeptidyl Peptidase 4; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D010450:Endopeptidases / Q000378:metabolism*; D005947:Glucose / Q000494:pharmacology; D009584:Nitrogen / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000201:enzymology* / Q000254:growth & development
chemical_list: D010450:Endopeptidases; D004152:Dipeptidyl-Peptidases and Tripeptidyl-Peptidases; D018819:Dipeptidyl Peptidase 4; D005947:Glucose; D009584:Nitrogen