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  Ribosome and transcript copy numbers, polysome occupancy and enzyme dynamics in Arabidopsis

Piques, M., Schulze, W. X., Hoehne, M., Usadel, B., Gibon, Y., Rohwer, J., et al. (2009). Ribosome and transcript copy numbers, polysome occupancy and enzyme dynamics in Arabidopsis. Molecular Systems Biology, 5, 314. doi:10.1038/msb.2009.68.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-2507-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-2508-8
Genre: Journal Article

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 Creators:
Piques, M.1, Author              
Schulze, W. X.2, Author              
Hoehne, M.1, Author              
Usadel, B.3, Author              
Gibon, Y.1, Author              
Rohwer, J.4, Author
Stitt, M.1, Author              
Affiliations:
1System Regulation, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753327              
2Signalling Proteomics, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753330              
3Integrative Carbon Biology, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753329              
4External Organizations, ou_persistent22              

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Free keywords: arabidopsis polysomes quantitative rt-pcr ribosome translation posttranscriptional expression regulation ribulose-bisphosphate carboxylase messenger-rna nitrate reductase gene-expression codon usage saccharomyces-cerevisiae carbohydrate-metabolism translational control protein-degradation
 Abstract: Plants are exposed to continual changes in the environment. The daily alternation between light and darkness results in massive recurring changes in the carbon budget, and leads to widespread changes in transcript levels. These diurnal changes are superimposed on slower changes in the environment. Quantitative molecular information about the numbers of ribosomes, of transcripts for 35 enzymes in central metabolism and their loading into polysomes is used to estimate translation rates in Arabidopsis rosettes, and explore the consequences for important sub-processes in plant growth. Translation rates for individual enzyme are compared with their abundance in the rosette to predict which enzymes are subject to rapid turnover every day, and which are synthesized at rates that would allow only slow adjustments to sustained changes of the environment, or resemble those needed to support the observed rate of growth. Global translation rates are used to estimate the energy costs of protein synthesis and relate them to the plant carbon budget, in particular the rates of starch degradation and respiration at night. Molecular Systems Biology 5: 314; published online 13 October 20009; doi:10.1038/msb.2009.68

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Language(s): eng - English
 Dates: 2009-10-132009
 Publication Status: Published in print
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 Identifiers: ISI: ISI:000271349000001
DOI: 10.1038/msb.2009.68
ISSN: 1744-4292 (Electronic) 1744-4292 (Linking)
URI: ://000271349000001 http://www.nature.com/msb/journal/v5/n1/pdf/msb200968.pdf
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Title: Molecular Systems Biology
Source Genre: Journal
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Pages: - Volume / Issue: 5 Sequence Number: - Start / End Page: 314 Identifier: -