A specific endoribonuclease, RNase P, affects gene expression of polycistronic operon mRNAs

Yong Li, Sidney Altman

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The rnpA mutation, A49, in Escherichia coli reduces the level of RNase P at 43°C because of a temperature-sensitive mutation in C5 protein, the protein subunit of the enzyme. Microarray analysis reveals the expression of several noncoding intergenic regions that are increased at 43°C compared with 30°C. These regions are substrates for RNase P, and they are cleaved less efficiently than, for example, tRNA precursors. An analysis of the tna, secG, rbs, and his operons, all of which contain RNase P cleavage sites, indicates that RNase P affects gene expression for regions downstream of its cleavage sites.

Original languageEnglish (US)
Pages (from-to)13213-13218
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume100
Issue number23
DOIs
StatePublished - Nov 11 2003
Externally publishedYes

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Endoribonucleases
Ribonuclease P
Operon
Gene Expression
Messenger RNA
Mutation
Intergenic DNA
RNA Precursors
Protein Subunits
Microarray Analysis
Escherichia coli
Temperature
Enzymes
Proteins

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

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abstract = "The rnpA mutation, A49, in Escherichia coli reduces the level of RNase P at 43°C because of a temperature-sensitive mutation in C5 protein, the protein subunit of the enzyme. Microarray analysis reveals the expression of several noncoding intergenic regions that are increased at 43°C compared with 30°C. These regions are substrates for RNase P, and they are cleaved less efficiently than, for example, tRNA precursors. An analysis of the tna, secG, rbs, and his operons, all of which contain RNase P cleavage sites, indicates that RNase P affects gene expression for regions downstream of its cleavage sites.",
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AB - The rnpA mutation, A49, in Escherichia coli reduces the level of RNase P at 43°C because of a temperature-sensitive mutation in C5 protein, the protein subunit of the enzyme. Microarray analysis reveals the expression of several noncoding intergenic regions that are increased at 43°C compared with 30°C. These regions are substrates for RNase P, and they are cleaved less efficiently than, for example, tRNA precursors. An analysis of the tna, secG, rbs, and his operons, all of which contain RNase P cleavage sites, indicates that RNase P affects gene expression for regions downstream of its cleavage sites.

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