New Measurements of DNA Twist Elasticity
arXiv:cond-mat/9708107 · doi:10.1016/S0006-3495(98)77958-5
Abstract
The symmetries of the DNA double helix require a new term in its linear response to stress: the coupling between twist and stretch. Recent experiments with torsionally-constrained single molecules give the first direct measurement of this new material parameter. We extract its value from a recent experiment. We also present a very simple microscopic theory predicting a value comparable to the one observed. Finally we sketch the effect of constrained twist on entropic elasticity of DNA arising from the connection between Link, Twist, and Writhe.
Plain TeX, harvmac, postscript available at http://dept.physics.upenn.edu/~nelson/index.shtml , Talk presented at the Workshop on DNA Topology, Rutgers University, April 1997.)
References in corpus (1)
Cited by in corpus (9)
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- Modeling DNA Structure, Elasticity and Deformations at the Base-pair Level
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- Theory of Crosslinked Bundles of Helical Filaments: Intrinsic Torques in Self-Limiting Biopolymer Assemblies
- DNA as a one-dimensional chiral material: Application to the structural transition between B form and Z form
- Stretching and relaxation dynamics in double stranded DNA
- Conserved Linking in Single- and Double-Stranded Polymers
- DNA as a one-dimensional chiral material. II. Dynamics of the structural transition between B form and Z form