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  • Title: Changes in the concentration of cAMP, fructose 2,6-bisphosphate and related metabolites and enzymes in Saccharomyces cerevisiae during growth on glucose.
    Author: François J, Eraso P, Gancedo C.
    Journal: Eur J Biochem; 1987 Apr 15; 164(2):369-73. PubMed ID: 3032616.
    Abstract:
    Changes in the concentration of several metabolites and enzymes related to carbohydrate metabolism were measured during the growth of Saccharomyces cerevisiae on a mineral medium containing glucose as the limiting nutrient. When about 50% of the original glucose was used the exponential phase ended and the culture entered a 'transition' phase before the complete exhaustion of glucose. In this transition phase several metabolic changes occurred. cAMP, that decreased along growth, reached a constant value of about 0.7 nmol/g dry weight. A pronounced drop in fructose-6-phosphate-2-kinase activity and in the concentration of fructose 2,6-bisphosphate and fructose 1,6-bisphosphate was observed accompanied by a less marked decrease in hexose monophosphates. Trehalase activity also dropped and reached a minimal value at the onset of the stationary phase when synthesis of trehalose began. Glycogen concentration and glycogen synthase activity increased sharply during the transition phase. Plasma membrane ATPase began to increase at the middle of the exponential phase and then, coincident with the glucose exhaustion, a 90% decrease in the measurable activity was observed.
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