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Cited by 586

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The c-fos transcript is targeted for rapid decay by two distinct mRNA degradation pathways.

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Shyu, A B, Greenberg, M E, Belasco, J G·1989·Genes & Development

Abstract

Rapid degradation of c-fos proto-oncogene mRNA is crucial for transient c-fos gene expression. Experiments were performed to investigate the cellular mechanisms responsible for the extremely short half-life of human c-fos mRNA in growth-factor-stimulated fibroblasts. These experiments demonstrate the existence of two distinct cellular pathways for rapid c-fos mRNA degradation. Each of these pathways recognizes a different, functionally independent instability determinant within the c-fos transcript. One instability determinant, which is located within the c-fos 3'-untranslated region, is a 75-nucleotide AU-rich segment. Insertion of this element into beta-globin mRNA markedly reduces the half-life of that normally long-lived message. Nevertheless, specific deletion of the AU-rich element from c-fos mRNA has little effect on the transcript's cytoplasmic half-life due to the presence of the other c-fos instability determinant, which is located in the protein-coding segment of the c-fos message. Examination of mRNA decay in cells treated with transcription inhibitors indicates that one c-fos mRNA degradation pathway is dependent on RNA synthesis, whereas the other is not.

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Metadata

Authors
Shyu, A. B., Greenberg, M. E., & Belasco, J. G.
Venue
Genes & Development
Published
1989-01
Volume
3
Issue
1
Pages
60-72
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2001748566
Cited by
586
References
32
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: The c-fos transcript is targeted for rapid decay by two distinct mRNA degradation pathways. https://app.cochat.ai/papers/10.1101/gad.3.1.60
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Shyu, A. B., Greenberg, M. E., & Belasco, J. G. (1989). The c-fos transcript is targeted for rapid decay by two distinct mRNA degradation pathways. Genes & Development. https://doi.org/10.1101/gad.3.1.60

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