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J Biol Chem

Title:		The transcriptional response of Saccharomyces cerevisiae to osmotic shock. Hot1p and Msn2p/Msn4p are required for the induction of subsets of high osmolarity glycerol pathway-dependent genes
Author(s):		Rep M; Krantz M; Thevelein JM; Hohmann S;
Address:		"Laboratorium voor Moleculaire Celbiologie, Katholieke Universiteit Leuven, Kardinaal Mercierlaan 92, B-3001 Leuven-Heverlee, Flanders, Belgium"
Journal Title:		J Biol Chem
Year:		2000
Volume:		275
Issue:		12
Page Number:		8290 - 8300
DOI:		10.1074/jbc.275.12.8290
ISSN/ISBN:		0021-9258 (Print) 0021-9258 (Linking)
Abstract:		"We have analyzed the transcriptional response to osmotic shock in the yeast Saccharomyces cerevisiae. The mRNA level of 186 genes increased at least 3-fold after a shift to NaCl or sorbitol, whereas that of more than 100 genes was at least 1.5-fold diminished. Many induced genes encode proteins that presumably contribute to protection against different types of damage or encode enzymes in glycerol, trehalose, and glycogen metabolism. Several genes, which encode poorly expressed isoforms of enzymes in carbohydrate metabolism, were induced. The high osmolarity glycerol (HOG) pathway is required for full induction of many but not all genes. The recently characterized Hot1p transcription factor is required for normal expression of a subset of the HOG pathway-dependent responses. Stimulated expression of the genes that required the general stress-response transcription factors Msn2p and Msn4p was also reduced in a hog1 mutant, suggesting that Msn2p/Msn4p might be regulated by the HOG pathway. The expression of genes that are known to be controlled by the mating pheromone response pathway was stimulated by osmotic shock specifically in a hog1 mutant. Inappropriate activation of the mating response may contribute to the growth defect of a hog1 mutant in high osmolarity medium"
Keywords:		"Adaptation, Biological/*genetics DNA-Binding Proteins/genetics/*metabolism Gene Expression Profiling Gene Expression Regulation, Fungal Glycerol/*metabolism Models, Genetic Mutation *Osmotic Pressure RNA, Fungal/analysis RNA, Messenger/analysis Saccharomy;"
Notes:		"MedlineRep, M Krantz, M Thevelein, J M Hohmann, S eng Research Support, Non-U.S. Gov't 2000/03/18 J Biol Chem. 2000 Mar 24; 275(12):8290-300. doi: 10.1074/jbc.275.12.8290"