Thermomechanics of DNA

TL;DR

This paper develops a theoretical model for the thermomechanical behavior of DNA, predicting critical temperatures, phase diagrams, and transitions, with excellent agreement with experimental data.

Contribution

It introduces a comprehensive theory for DNA thermomechanics that accurately predicts various phase transitions and behaviors under different forces and torques.

Findings

Predicted critical temperatures for DNA denaturation under torque and stretch.

Mapped phase diagrams for stable B-DNA, supercoiling, and overstretching.

Achieved excellent agreement with single molecule manipulation experiments.

Abstract

A theory for thermomechanical behavior of homogeneous DNA at thermal equilibrium predicts critical temperatures for denaturation under torque and stretch, phase diagrams for stable B--DNA, supercoiling, optimally stable torque, and the overstretching transition as force-induced DNA melting. Agreement with available single molecule manipulation experiments is excellent.