Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling of S. cerevisiae wild type versus delta vts1

ABSTRACT: The experiment was designed to look for genes up/downregulated in the absense of Vts1p compared to wild-type cells grown in steady state conditions. Experiment Overall Design: 3 chips delta VTS1 vs. 2 wild type control chips

ORGANISM(S): Saccharomyces cerevisiae

SUBMITTER: Guillaume Francois Chanfreau

PROVIDER: E-GEOD-3859 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Shape-specific recognition in the structure of the Vts1p SAM domain with RNA.

Oberstrass Florian C FC Lee Albert A Stefl Richard R Janis Michael M Chanfreau Guillaume G Allain Frédéric H-T FH

Nature structural & molecular biology 20060122 2

Although the abundant sterile alpha motif (SAM) domain was originally classified as a protein-protein interaction domain, it has recently been shown that certain SAM domains have the ability to bind RNA, defining a new type of post-transcriptional gene regulator. To further understand the function of SAM-RNA recognition, we determined the solution structures of the SAM domain of the Saccharomyces cerevisiae Vts1p (Vts1p-SAM) and the Smaug response element (SRE) stem-loop RNA as a complex and in ...[more]

PMID: 16429156

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Project description:Cells must adjust their gene expression in order to compete in a constantly changing environment. Two alternative strategies could in principle ensure optimal coordination of gene expression with physiological requirement. First, the internal physiological state itself could feedback to regulated gene expression. Second, the expected physiological state could be inferred from the external environment, using evolutionary-tuned signaling pathways. Coordination of ribosomal biogenesis with the requirement for protein synthesis appears to be particularly important, since cells devote a large fraction of their biosynthetic capacity for ribosomal biogenesis. To define the relative importance of internal vs. external sensing to the regulation of ribosomal biogenesis gene expression, we subjected S. cerevisiae cells to conditions which decoupled the actual vs. environmentally-expected growth rate. Gene expression followed the environmental signal according to the expected, but not the actual, growth rate. Simultaneous monitoring of gene expression and growth rate in chemostat-grown cultures further confirmed that ribosome biogenesis genes responded rapidly to changes in the environments but were oblivious to longer-term changes in growth rate. Our results suggest that the capacity to anticipate and prepare for environmental changes presented a major selection force during yeast evolution. Keywords: Saccharomyces_Cerevisiae, Stress response, ADH1 deletion, time courses, chemostat Experiment 1: ADH1 deletion cells, which grow faster on glycerol rather then glucose medium, were grown in both glucose and glycerol medium. The cells expression on glycerol is compared to their expression glucose (5 microarrays). Experiment 2: Time course of ADH1 deletion cells upon growth on glycerol and on glucose (7 microarrays). Experiment 3: Response of steady state grown cells to environmental perturbations. Cells were grown in glucose or histidine limited chemostats and reached steady state. The cells were then subjected to perturbations such as DTT, heat shock, NaCl, Clotrimazole, H2O2, and addition of limiting factors (histidine and glucose, respectively). Overall we have examined 10 timecourses with 83 microarrays.

Dataset Information

Transcription profiling of S. cerevisiae wild type versus delta vts1

Publications

Shape-specific recognition in the structure of the Vts1p SAM domain with RNA.

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