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Title: Osmolarity hypersensitivity of hog1 deleted mutants is suppressed by mutation in KSS1 in budding yeast Saccharomyces cerevisiae. Author: Lee SJ, Park SY, Na JG, Kim YJ. Journal: FEMS Microbiol Lett; 2002 Mar 19; 209(1):9-14. PubMed ID: 12007647. Abstract: An osmosensing mechanism of Saccharomyces cerevisiae involves a mitogen-activated protein kinase (MAPK) cascade (HOG pathway). This study aimed to investigate the response of the yeast to osmotic stress. A mutant strain, in which the HOG1 gene was disrupted by TRP1, was constructed. A spontaneous mutant, named YJY45, which suppresses the osmosensitive growth phenotype of the hog1 deletion mutant, was selected and showed a secondary phenotype of temperature sensitivity on YPD containing 0.5 M NaCl at 37 degrees C. Our data indicate that the spontaneous mutation in YJY45 mutant was mapped in KSS1, which is one of the MAPK family. The mutation in KSS1 suppresses the osmolarity-hypersensitive phenotype of the hog1 deletion mutation and restores GPD1 induction.[Abstract] [Full Text] [Related] [New Search]