Matthew E. Jurek Week 11

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Tai et al. (2007) Acclimation of Saccharomyces cerevisiae to Low Temperature: A Chemostat-based Transcriptome Analysis. Molecular Biology of the Cell 18: 5100–5112.
Tai et al. (2007) Acclimation of Saccharomyces cerevisiae to Low Temperature: A Chemostat-based Transcriptome Analysis. Molecular Biology of the Cell 18: 5100–5112.
#Introduction
#Introduction
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*On the cellular level, yeast responds in a number of ways to temperature changes (temps outside the 25-30 degree C optimum).
+
#*On the cellular level, yeast responds in a number of ways to temperature changes (temps outside the 25-30 degree C optimum).
-
*Temperatures below the optimum range slow cellular processes.
+
#*Temperatures below the optimum range slow cellular processes.
-
*Effects of low temperature depend on exposure time
+
#*Effects of low temperature depend on exposure time
-
*Sudden exposure results in adaptaion
+
#*Sudden exposure results in adaptaion
-
*Prolonged exposure results in acclimation
+
#*Prolonged exposure results in acclimation
-
*Previous studies have focused on cold shock (sudden exposure) and found 2 phases of cold-shock response
+
#*Previous studies have focused on cold shock (sudden exposure) and found 2 phases of cold-shock response
-
*Current low-temp transcriptome databases contain major discrepancies
+
#*Current low-temp transcriptome databases contain major discrepancies
-
*Previous studies have focused on batch culutures: hard to distinguish temp effects on transcription from effects of specific growth rate
+
#*Previous studies have focused on batch culutures: hard to distinguish temp effects on transcription from effects of specific growth rate
-
*Chemostat cultures allow for control of specific growth rate independent of culture conditions such as metabolites, pH, and oxygen availability.
+
#*Chemostat cultures allow for control of specific growth rate independent of culture conditions such as metabolites, pH, and oxygen availability.
-
*Overall Goal: Focus on genome-wide transcriptional regulation by exploring steady-state acclimatized growth of yeast at low temps
+
#*Overall Goal: Focus on genome-wide transcriptional regulation by exploring steady-state acclimatized growth of yeast at low temps

Revision as of 23:16, 3 April 2013

Matthew E. Jurek BIOL398-03/S13

Contents

Assignment Page

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Biological Terms

  1. trehalose- also known as mycose or tremalose, is a natural alpha-linked disaccharide formed by an α,α-1,1-glucoside bond between two α-glucose units.
  2. mannoprotein- component of yeast cell walls; protein covalently linked to polymers of mannose.
  3. chromatography- the separation of mixtures into their constituents by preferential adsorption by a solid, as a column of silica (column chromatography) or a strip of filter paper (paper chromatography) or by a gel.
  4. immunoprecipitation- the separation of an antigen from a solution by the formation of a large complex with its specific antibody.
  5. catabolite- a product of catabolic action.
  6. kinetics- the branch of mechanics that deals with the actions of forces in producing or changing the motion of masses.
  7. ceramides- ceramides are a family of lipid molecules. A ceramide is composed of sphingosine and a fatty acid.
  8. orthologue- one of two or more homologous gene sequences found in different species.
  9. ergosterol- a compound present in ergot and many other fungi. A steroid alcohol, it is converted to vitamin D2 when irradiated with ultraviolet light.
  10. transcriptome- the transcriptome is the set of all RNA molecules, including mRNA, rRNA, tRNA, and non-coding RNA produced in one or a population of cells.

via Biology Online Dictionary

Acclimation of Saccharomyces cerevisiae to Low Temperature: A Chemostat-based Transcriptome Analyis

Tai et al. (2007) Acclimation of Saccharomyces cerevisiae to Low Temperature: A Chemostat-based Transcriptome Analysis. Molecular Biology of the Cell 18: 5100–5112.

  1. Introduction
    • On the cellular level, yeast responds in a number of ways to temperature changes (temps outside the 25-30 degree C optimum).
    • Temperatures below the optimum range slow cellular processes.
    • Effects of low temperature depend on exposure time
    • Sudden exposure results in adaptaion
    • Prolonged exposure results in acclimation
    • Previous studies have focused on cold shock (sudden exposure) and found 2 phases of cold-shock response
    • Current low-temp transcriptome databases contain major discrepancies
    • Previous studies have focused on batch culutures: hard to distinguish temp effects on transcription from effects of specific growth rate
    • Chemostat cultures allow for control of specific growth rate independent of culture conditions such as metabolites, pH, and oxygen availability.
    • Overall Goal: Focus on genome-wide transcriptional regulation by exploring steady-state acclimatized growth of yeast at low temps
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