Title
Sedimentation of macroscopic rigid knots and its relation to gel electrophoretic mobility of DNA knots
Department/School
Mathematics
Date
1-21-2013
Document Type
Article
Keywords
macroscopic rigid knots, DNA knots
Abstract
We address the general question of the extent to which the hydrodynamic behaviour of microscopic freely fluctuating objects can be reproduced by macrosopic rigid objects. In particular, we compare the sedimentation speeds of knotted DNA molecules undergoing gel electrophoresis to the sedimentation speeds of rigid stereolithographic models of ideal knots in both water and silicon oil. We find that the sedimentation speeds grow roughly linearly with the average crossing number of the ideal knot configurations, and that the correlation is stronger within classes of knots. This is consistent with previous observations with DNA knots in gel electrophoresis.
Volume
3
Published in
Scientific Reports
Citation/Other Information
Weber, C., Carlen, M., Dietler, G., Rawdon, E. J., & Stasiak, A. (2013). Sedimentation of macroscopic rigid knots and its relation to gel electrophoretic mobility of DNA knots. Scientific Reports, 3: 1091. https://doi.org/10.1038/srep01091