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Updated: Jul 11, 2026
12:12
Analysis of Termination of Transcription Using BrUTP-strand-specific Transcription Run-on (TRO) Approach
Published on: March 12, 2017
The elongation-termination decision in transcription
1Institute of Molecular Biology, University of Oregon, Eugene.
Science (New York, N.Y.)
|February 14, 1992
Summary
RNA polymerase must choose between extending the transcript or terminating. Small changes in transition state energy barriers control termination efficiency, influencing gene regulation.
Area of Science:
- Molecular Biology
- Biophysics
- Biochemistry
Background:
- Transcription involves a kinetic competition between RNA elongation and termination.
- Termination efficiency is crucial for gene regulation and is influenced by RNA polymerase complex stability.
Purpose of the Study:
- To explain the kinetic competition between RNA elongation and termination pathways.
- To model the destabilization of elongation complexes at intrinsic termination sites.
- To describe mechanisms of termination efficiency modulation by regulatory proteins.
Main Methods:
- Analysis of alternative Eyring transition state barriers.
- Modeling of elongation complex destabilization at termination sites.
- Description of regulatory protein effects on termination.
Main Results:
- Termination efficiency correlates with small changes in relative transition state energy barriers.
- A model explains elongation complex destabilization at intrinsic terminators.
- Mechanisms for termination modulation by regulatory proteins are elucidated.
Conclusions:
- Termination is a regulated kinetic process controlled by transition state energy barriers.
- Understanding these barriers provides insight into gene regulation.
- Regulatory proteins play a key role in modulating transcription termination.
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