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Attenuation may regulate gene expression in animal viruses and cells.
CRC Critical Reviews in Biochemistry
|January 1, 1985
Summary
Eukaryotic gene regulation may involve a premature RNA termination process similar to prokaryotic attenuation. This mechanism, enhanced by DRB, is being investigated for its role in gene expression control.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Promoter-proximal RNA chains are abundant in eukaryotes.
- Premature termination, similar to prokaryotic attenuation, has been suggested in eukaryotes.
- The drug 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole (DRB) enhances premature termination, but its mechanism is unclear.
Purpose of the Study:
- To investigate the nucleotide sequences involved in eukaryotic attenuation.
- To elucidate the mechanism of DRB-enhanced premature termination.
- To explore attenuation and mRNA modulation as eukaryotic gene regulation strategies.
Main Methods:
- Analysis of nucleotide sequences of SV40 and other viral/cellular genes.
- Development of a model for attenuation and mRNA modulation in SV40 gene expression.
Main Results:
- Nucleotide sequence determination provides a basis for studying attenuation mechanisms.
- A model suggests attenuation and mRNA modulation quantitatively regulate SV40 gene expression via feedback control.
Conclusions:
- Attenuation and mRNA modulation represent a potential eukaryotic transcription regulation mechanism.
- This model offers a framework for investigating eukaryotic gene expression control.