Interplay between DNA supercoiling and transcription elongation
- PMID: 25764330
- PMCID: PMC4215170
- DOI: 10.4161/trns.28636
Interplay between DNA supercoiling and transcription elongation
Abstract
Transcription-coupled DNA supercoiling has been shown to be an important regulator of transcription that is broadly present in the cell. Here we review experimental work which shows that RNA polymerase is a powerful torsional motor that can alter DNA topology and structure, and DNA supercoiling in turn directly affects transcription elongation.
Keywords: DNA supercoiling; E. coli RNA polymerase; angular optical trap; single molecule; torque; torsional motor; transcription; twin supercoiled domain model.
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