Saccharomyces cerevisiae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA347626 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Excess cysteine (and cystine) is known to be toxic in organisms. Due to the absence of cysteine dioxygenase (involved in degradation of excess cysteine in humans and pathogenic fungi) in non pathogenic fungi such as S. cerevisiae, mechanism of cysteine (and cystine) tolerance is yet to be addressed.
2017-06-13 | GSE87794 | GEO
Project description:Prolonged cultivation (>25 generations) of Saccharomyces cerevisiae in aerobic, maltose-limited chemostat cultures led to profound physiological changes. Maltose hypersensitivity was observed when cells from prolonged cultivations were suddenly exposed to excess maltose. This substrate hypersensitivity was evident from massive cell lysis and loss of viability. During prolonged cultivation at a fixed specific growth rate, the affinity for the growth-limiting nutrient (i.e., maltose) increased, as evident from a decreasing residual maltose concentration. Furthermore, the capacity of maltose-dependent proton uptake increased up to 2.5-fold during prolonged cultivation. Genome-wide transcriptome analysis showed that the increased maltose transport capacity was not primarily due to increased transcript levels of maltose-permease genes upon prolonged cultivation. We propose that selection for improved substrate affinity (ratio of maximum substrate consumption rate and substrate saturation constant) in maltose-limited cultures leads to selection for cells with an increased capacity for maltose uptake. At the same time, the accumulative nature of maltose-proton symport in S. cerevisiae leads to unrestricted uptake when maltose-adapted cells are exposed to a substrate excess. These changes were retained after isolation of individual cell lines from the chemostat cultures and nonselective cultivation, indicating that mutations were involved. The observed trade-off between substrate affinity and substrate tolerance may be relevant for metabolic engineering and strain selection for utilization of substrates that are taken up by proton symport. Keywords: Evolution
2007-08-31 | GSE8897 | GEO
Project description:Saccharomyces cerevisiae is an excellent microorganism for industrial succinic acid production, but high succinic acid concentration will inhibit the growth of Saccharomyces cerevisiae then reduce the production of succinic acid. Through analysis the transcriptomic data of Saccharomyces cerevisiae with different genetic backgrounds under different succinic acid stress, we hope to find the response mechanism of Saccharomyces cerevisiae to succinic acid.
2022-01-09 | GSE193190 | GEO
Project description:In this study, we combined metabolic reconstruction, growth assays, metabolome and transcriptome analyses to obtain a global view of the sulfur metabolic network and of the response to sulfur availability in Brevibacterium aurantiacum. In agreement with the growth of B. aurantiacum in the presence of sulfate and cystine, the metabolic reconstruction showed the presence of a sulfate assimilation pathway and of thiolation pathways that produce cysteine (cysE and cysK) or homocysteine (metX and metY) from sulfide, of at least one gene of the transsulfuration pathway (aecD) and of genes encoding three MetE-type methionine synthases. We also compared the expression profiles of B. aurantiacum ATCC9175 during sulfur starvation and in the presence of sulfate, cystine or methionine plus cystine. In sulfur starvation, 690 genes including 21 genes involved in sulfur metabolism and 29 genes encoding amino acids and peptide transporters were differentially expressed. We also investigated changes in pools of sulfur-containing metabolites and in expression profiles after growth in the presence of sulfate, cystine or methionine plus cystine. The expression of genes involved in sulfate assimilation and cysteine synthesis was repressed in presence of cysteine, while the expression of metX, metY, metE1, metE2 and BL613 encoding a probable cystathionine-γ-synthase decreased in the presence of methionine. We identified three ABC transporters: two stronger transcribed during cysteine limitation and one during methionine depletion. Finally, the expression of genes encoding a methionine γ-lyase, BL929, and a methionine transporter (metPS) was induced in the presence of methionine, in conjunction with a significant increase of volatile sulfur compounds production. Refer to individual Series. This SuperSeries is composed of the following subset Series: GSE25418: BA-Methionine plus Cystine vs Cystine GSE25419: BA-Sulfate vs Cystine GSE25420: BA-Methionine plus Cystine vs Sulfate GSE25421: BA-Sulfate vs Sulfate starvation
2010-11-25 | E-GEOD-25422 | biostudies-arrayexpress
Project description:Next-generation proteomics of Saccharomyces cerevisiae for defining the response of this yeast to lanthanides.
2022-04-23 | PXD010700 | Pride
Project description:LPS was used as a stressor to stimulate the model organism Saccharomyces cerevisiae. To detect extracellular metabolic information of VOCs. To provide a molecular basis for cellular metabolism of VOCs by proteome.
2023-12-18 | PXD047920 |
Project description:Phosphoglycerate mutase knock-out mutant Saccharomyces cerevisiae: physiological investigation and transcriptome analysis
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Project description:Response of Saccharomyces cerevisiae engineered for xylose metabolism to changes in carbon source and aeration Keywords: ordered
2004-11-13 | GSE835 | GEO
Project description:Saccharomyces cerevisiae response to various stressors
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Project description:This dataset contains global label-free proteomics data from Saccharomyces cerevisiae cultivated under carbon-limited chemostat conditions. Samples were collected under aerobic and anaerobic steady-state conditions and after establishment of a dynamic steady state induced by repetitive glucose pulses. Proteomic analysis was performed to investigate oxygen-dependent metabolic adaptation and long-term proteome reprogramming in response to transient carbon excess under nutrient-limited conditions. Raw mass spectrometry files and processed identification and quantification results are provided.
2026-02-11 | PXD074682 |