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Studying DNA Looping by Single-Molecule FRET
Published on: June 28, 2014
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DNA supercoiling-induced shapes alter minicircle hydrodynamic properties
Radost Waszkiewicz1, Maduni Ranasinghe2, Jonathan M Fogg3
1Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland.
Biorxiv : the Preprint Server for Biology
|January 30, 2023
Summary
DNA supercoiling influences its 3-D shape and hydrodynamic properties. This study reveals how DNA minicircle shape, loop length, and supercoiling affect diffusion and sedimentation, impacting DNA functions.
Area of Science:
- Molecular Biology
- Biophysics
- Physical Chemistry
Background:
- DNA exists as negatively supercoiled loops in cells, influencing its three-dimensional structure.
- DNA supercoiling, looping, and shape are critical for DNA storage, replication, transcription, and repair.
Conclusions:
- Negative supercoiling and DNA shape play a crucial role in determining hydrodynamic behavior.
- The combined theoretical and experimental framework provides a method for predicting supercoiling's effects on DNA.
- This research offers insights into DNA organization and function at a molecular level.
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