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The cAMP-PKA pathway consists of an extracellular ligand-sensitive G protein-coupled receptor, a G protein signal transmitter, and the effector, adenylate cyclase, of which the product, cAMP, acts as an intracellular second messenger. cAMP activates PKA by dissociating the regulatory subunit from the catalytic subunit. Yeast cells (Saccharomyces cerevisiae)… (More)
The yeast Saccharomyces cerevisiae shows a great variety of cellular responses to glucose via several glucose-sensing and signaling pathways. Recent microarray analysis has revealed multiple levels of genomic sensitivity to glucose and highlighted the power of genome-wide analysis to detect cellular responses to minute environmental changes.
The cAMP-protein kinase A (PKA) pathway in the yeast Saccharomyces cerevisiae controls a variety of properties that depend on the nutrient composition of the medium. High activity of the pathway occurs in the presence of rapidly fermented sugars like glucose or sucrose, but only as long as growth is maintained. Growth arrest of fermenting cells or growth on… (More)