Equilibrium properties and force-driven unfolding pathways of RNA molecules
Soft Condensed Matter
2009-11-05 v1 Statistical Mechanics
Biomolecules
Abstract
The mechanical unfolding of a simple RNA hairpin and of a 236--bases portion of the Tetrahymena thermophila ribozyme is studied by means of an Ising--like model. Phase diagrams and free energy landscapes are computed exactly and suggest a simple two--state behaviour for the hairpin and the presence of intermediate states for the ribozyme. Nonequilibrium simulations give the possible unfolding pathways for the ribozyme, and the dominant pathway corresponds to the experimentally observed one.
Cite
@article{arxiv.0910.5089,
title = {Equilibrium properties and force-driven unfolding pathways of RNA molecules},
author = {A. Imparato and A. Pelizzola and M. Zamparo},
journal= {arXiv preprint arXiv:0910.5089},
year = {2009}
}
Comments
Main text + appendix, to appear in Phys. Rev. Lett