Genomic analysis of severe hypersensitivity to hygromycin B reveals linkage to vacuolar defects and new vacuolar gene functions in Saccharomyces cerevisiae
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منابع مشابه
Genomic screen for vacuolar protein sorting genes in Saccharomyces cerevisiae.
The biosynthetic sorting of hydrolases to the yeast vacuole involves transport along two distinct routes referred to as the carboxypeptidase Y and alkaline phosphatase pathways. To identify genes involved in sorting to the vacuole, we conducted a genome-wide screen of 4653 homozygous diploid gene deletion strains of Saccharomyces cerevisiae for missorting of carboxypeptidase Y. We identified 14...
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Protons, the smallest and most ubiquitous of ions, are central to physiological processes. Transmembrane proton gradients drive ATP synthesis, metabolite transport, receptor recycling and vesicle trafficking, while compartmental pH controls enzyme function. Despite this fundamental importance, the mechanisms underlying pH homeostasis are not entirely accounted for in any organelle or organism. ...
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Mutations that cause loss of acidity in the vacuole (lysosome) of Saccharomyces cerevisiae were identified by screening colonies labeled with the fluorescent, pH-sensitive, vacuolar labeling agent, 6-carboxyfluorescein. Thirty nine vacuolar pH (Vph-) mutants were identified. Four of these contained mutant alleles of the previously described PEP3, PEP5, PEP6 and PEP7 genes. The remaining mutants...
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Proteinase A and proteinase B, two vacuolar enzymes in Saccharomyces cerevisiae, are synthesized as larger precursors with apparent molecular weights of approximately 52,000 and 42,000, respectively. These precursor molecules are processed to their mature forms of 42,000 molecular weight for proteinase A and 33,000 molecular weight for proteinase B. In the presence of tunicamycin, an inhibitor ...
متن کاملDefects associated with mitochondrial DNA damage can be mitigated by increased vacuolar pH in Saccharomyces cerevisiae.
While searching for mutations that alleviate detrimental effects of mitochondrial DNA (mtDNA) damage, we found that disrupting vacuolar biogenesis permitted survival of a sensitized yeast background after mitochondrial genome loss. Furthermore, elevating vacuolar pH increases proliferation after mtDNA deletion and reverses the protein import defect of mitochondria lacking DNA.
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ژورنال
عنوان ژورنال: Current Genetics
سال: 2009
ISSN: 0172-8083,1432-0983
DOI: 10.1007/s00294-009-0285-3