Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Global analysis of Escherichia coli RNA degradosome function

ABSTRACT: This SuperSeries is composed of the following subset Series: GSE3977: Comparative Transcript Abundance in E. Coli Degradosome Mutants and their Parental Strains GSE3978: mRNA Decay in E. Coli Degradosome Mutants and their Parental Strains Abstract: RNase E, an essential endoribonuclease of Escherichia coli, interacts through its C-terminal region with multiple other proteins to form a complex termed the RNA degradosome. To investigate the degradosome's proposed role as an RNA decay machine, we used DNA microarrays to globally assess alterations in the steady-state abundance and decay of 4,289 E. coli mRNAs at single-gene resolution in bacteria carrying mutations in the degradosome constituents RNase E, polynucleotide phosphorylase, RhlB helicase, and enolase. Our results show that the functions of all four of these proteins are necessary for normal mRNA turnover. We identified specific transcripts and functionally distinguishable transcript classes whose half-life and abundance were affected congruently by multiple degradosome proteins, affected differentially by mutations in degradosome constituents, or not detectably altered by degradosome mutations. Our results, which argue that decay of some E. coli mRNAs in vivo depends on the action of assembled degradosomes, whereas others are acted on by degradosome proteins functioning independently of the complex, imply the existence of structural features or biochemical factors that target specific classes of mRNAs for decay by degradosomes Refer to individual Series

ORGANISM(S): Escherichia coli

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PROVIDER: E-GEOD-4394 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Global analysis of Escherichia coli RNA degradosome function using DNA microarrays.

Bernstein Jonathan A JA Lin Pei-Hsun PH Cohen Stanley N SN Lin-Chao Sue S

Proceedings of the National Academy of Sciences of the United States of America 20040223 9

RNase E, an essential endoribonuclease of Escherichia coli, interacts through its C-terminal region with multiple other proteins to form a complex termed the RNA degradosome. To investigate the degradosome's proposed role as an RNA decay machine, we used DNA microarrays to globally assess alterations in the steady-state abundance and decay of 4,289 E. coli mRNAs at single-gene resolution in bacteria carrying mutations in the degradosome constituents RNase E, polynucleotide phosphorylase, RhlB he ...[more]

PMID: 14981237

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Global analysis of Escherichia coli RNA degradosome function

Publications

Global analysis of Escherichia coli RNA degradosome function using DNA microarrays.

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