Knotting of a DNA Chain During Ring Closure
- 23 April 1993
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 260 (5107) , 533-536
- https://doi.org/10.1126/science.8475384
Abstract
The formation of knotted species on random ring closure of two DNAs that are 5.6 kilobase pairs (kbp) and 8.6 kbp in length was measured, and these data were used to calculate the effective DNA helix diameter as a function of sodium ion and magnesium ion concentration. In the presence of more than 50 mM magnesium ion, interactions between DNA segments appear to be attractive rather than repulsive. The free energy of formation of relaxed trefoil and figure-eight DNA knots and of supercoiled trefoil DNA knots was also evaluated.Keywords
This publication has 44 references indexed in Scilit:
- Knot theory and statistical mechanicsReviews of Modern Physics, 1992
- The knot probability in lattice polygonsJournal of Physics A: General Physics, 1990
- Knots in self-avoiding walksJournal of Physics A: General Physics, 1988
- Communication between segments of DNA during site-specific recombinationNature, 1987
- Knotting of DNA caused by a genetic rearrangementJournal of Molecular Biology, 1983
- Investigation of the flexibility of DNA using transient electric birefringenceBiopolymers, 1981
- Statistical mechanics and topology of polymer chainsNature, 1975
- Statistical mechanics with topological constraints: IProceedings of the Physical Society, 1967
- Chemical Topology1Journal of the American Chemical Society, 1961
- THE PREPARATION OF INTERLOCKING RINGS: A CATENANE1Journal of the American Chemical Society, 1960