Abstract
In eukaryotes, poly(A) tails usually act as stabilizers of intact mRNAs, whereas in E. coli they serve to accelerate the destruction of fragments. The mechanisms underlying these contrasting effects of the same RNA modification are discussed.
MeSH terms
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Cell Compartmentation
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Cell Nucleus / metabolism
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Cytoplasm / metabolism
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Endoribonucleases / metabolism
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Escherichia coli / metabolism*
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Eukaryotic Cells / metabolism*
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Exoribonucleases / metabolism
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Kinetics
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Models, Biological
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Poly A / genetics
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Poly A / metabolism*
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Poly(A)-Binding Proteins / metabolism
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RNA Processing, Post-Transcriptional
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RNA, Bacterial / metabolism
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RNA, Messenger / metabolism*
Substances
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Poly(A)-Binding Proteins
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RNA, Bacterial
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RNA, Messenger
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Poly A
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Endoribonucleases
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Exoribonucleases
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ribonuclease E