Reference: Varela JC, et al. (1992) Osmostress-induced changes in yeast gene expression. Mol Microbiol 6(15):2183-90

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Abstract


When Saccharomyces cerevisiae cells are exposed to high concentration of NaCl, they show reduced viability, methionine uptake and protein biosynthesis. Cells can acquire tolerance against a severe salt shock (up to 1.4 M NaCl) by a previous treatment with 0.7 M NaCl, but not by a previous heat shock. Two-dimensional analysis of [3H]-leucine-labelled proteins from salt-shocked cells (0.7 M NaCl) revealed the elevated rate of synthesis of nine proteins, among which were the heat-shock proteins hsp12 and hsp26. Northern analysis using gene-specific probes confirmed the identity of the latter proteins and, in addition, demonstrated the induction of glycerol-3-phosphate dehydrogenase gene expression. The synthesis of the same set of proteins is induced or enhanced upon exposure of cells to 0.8 M sucrose, although not as dramatically as in an iso-osmolar NaCl concentration (0.7 M).

Reference Type
Journal Article
Authors
Varela JC, van Beekvelt C, Planta RJ, Mager WH
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