Saccharomyces cerevisiae
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ABSTRACT:
PROVIDER: PRJNA101533 | ENA |
REPOSITORIES: ENA
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Project description:Samples GSM206658-GSM206693: Acquired Stress resistance in S. cerevisiae: NaCl primary and H2O2 secondary Transcriptional timecourses of yeast cells exposed to 0.7M NaCl alone, 0.5mM H2O2 alone, or 0.5mM H2O2 following 0.7M NaCl, all compared to an unstressed sample. Repeated using msn2∆ strain. Samples GSM291156-GSM291196: Transcriptional response to stress in strains lacking MSN2 and/or MSN4 Transcriptional timecourses of yeast cells (WT, msn2∆, msn4∆, or msn2∆msn4∆) exposed to 0.7M NaCl for 45 minutes or 30-37˚C Heat Shift for 15 min compared to an unstressed sample of the same strain. Keywords: Stress Response
2008-09-05 | GSE8335 | GEO
Project description:Periodic fever syndrome is a disease that affects children mainly in the Mediterranean region, which has as one of the typical conditions of inflammation generalized by the body that can spontaneously regress. It has already been established that this pattern is presented by individuals carrying a mutant allele of the gene encoding the enzyme mevalonate kinase (MVK). This gene has an ortholog in the yeast Saccharomyces cerevisiae (ERG12) and mutations in this genes show phenotype that resemble those of the cells of these individuals. The present work aims to use this yeast as a biological model to analyze the role of the ERG12 gene (MVK) in the development of the disease. In this experiment, we used a wild type strain for the enzyme Erg12 (wt) and a genetically modified strain that decreases the activity of this enzyme (erg12-d) to 10%. The cells were cultured in synthetic medium containing glucose (reference medium) and each was re-inoculated and synthetic medium containing glucose or glycerol (erg12-d cells have growth deficiency in glycerol). By attaining D.O. value around 0.5 (600nm), the cells were collected for total RNA extraction and this was subjected to double-labeled microarray analysis in four combinations: erg12-d/wt and glycerol/glucose.
2018-04-05 | GSE98163 | GEO
Project description:Expression data from yeast treated with enediynes compared to gamma radiation
| PRJNA96303 | ENA
Project description:Tra1 is a component of the Saccharomyces cerevisiae SAGA and NuA4 complexes and a member of the phosphatidylinositol 3-kinase (PI3K) related kinase family that contain a C- terminal PI3K domain followed by a ~ 35-residue FATC domain. We have characterized four alleles with single residue changes in the FATC domain. Of these tra1-L3733A had the most pronounced effects with phenotypes including temperature and cold sensitivity, and reduced growth in media containing ethanol, Calcofluor white, rapamycin, chloramphenicol and geneticin. Tra1-L3733A interacted at normal levels with components of the NuA4 and SAGA complexes, and did not significantly alter histone acetylation patterns. The tra1-L3733A allele resulted in two-fold or greater change in expression of approximately 11% of yeast genes in rich media. Of the 279 genes with increased expression, 175 were ribosomal subunits or involved in ribosomal function or biogenesis. Elevated levels of Pol I and Pol III transcripts were also observed. The phenotypes of the tra1-L3733A overlapped with but were not identical to strains containing deletions of SAGA or NuA4 components or with strains containing mutations in the PI3K domain. Our finding that the double mutant allele, tra1-SRR3413/L3733A with alterations in the PI3K and FATC domains, resulted in wild type growth, suggests a model whereby the FATC domain negatively regulates the activity of the PI3K domain. Expression of genes involved in ribosome biosynthesis, other than the ribosomal subunits themselves, returned to near normal levels in the double mutant strain. We also characterized tra1-G3745, which contains an additional glycine residue following the normal C-terminal phenylalanine. This allele did not support viability and showed severe dominant negative effects. In contrast to what was observed for tra1-L3733A, tra1-G4745 resulted in decreased expression of genes required for ribosome biogenesis and did not interact with Esa1 or Spt7.
2011-09-20 | GSE13561 | GEO
Project description:wt yeast expression changes in low phosphate conditions
| PRJNA237302 | ENA
Project description:The goal of this set of experiments was to identify transcripts that are differentially expressed upon reactivation of NMD in an nmd2::HIS3 strain by galactose-induced expression of the NMD2 gene. Experiment Overall Design: Yeast strains harboring nmd2::HIS3 and the GAL1-NMD2 allele on a plasmid or the empty vector were grown in SC-medium containing raffinose but lacking uracile. Genome-wide expression profiles of the GAL-NMD2 and nmd2 deletion strains were analyzed over a 60-minute time course after adding galactose to the cell cultures. Four independent replicates were carried out for this experiment.
2008-06-16 | E-GEOD-9482 | biostudies-arrayexpress
Project description:Altered mRNA levels of HBT1 were observed in S. cerevisiae cells expressing hsc82-W296A compared to WT HSC82. We conducted microarray analysis to determine the extent of other changes in that strain. The yeast strain used contained chromosomal deletions of HSC82 and HSP82. WT HSC82 or hsc82-W296A was supplied on a plasmid so that it was the only Hsp90 present in the cell. Yeast were grown overnight in rich media at 30° and harvested during exponential growth phase. RNA was harvested from three cultures expressing WT Hsc82 and 3 cultures expressing the Hsp90 mutant..
2012-04-15 | E-GEOD-34757 | biostudies-arrayexpress