Mesoscopic model for nano-channel confined DNA
Marco Zoli
TL;DR
This paper introduces a Hamiltonian model and computational approach to study the structural and thermodynamic behavior of DNA confined in nanochannels, revealing over-twisting and stretching effects due to spatial confinement.
Contribution
The paper presents a novel Hamiltonian model and computational method specifically designed for analyzing confined helical molecules like DNA in nanochannels.
Findings
DNA becomes over-twisted in narrow nanochannels
DNA is stretched when confined in small spaces
The model accurately predicts structural changes due to confinement
Abstract
I present a Hamiltonian model and a computational method suitable to evaluate structural and thermodynamic properties of helical molecules embedded in crowded environments which may confine the space available to the base pair fluctuations. It is shown that, for the specific case of a short DNA fragment in a nanochannel, the molecule is markedly over-twisted and stretched by narrowing the width of the channel.
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