Unraveling DNA tori under tension

C. Battle, B. van den Broek, M.C. Noom, J. van Mameren, G.J.L. Wuite, F.C. Mac Kintosh

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Motivated by recent experiments, we develop a model for DNA toroids under external tension. We find that tori are the equilibrium states for our model up to a critical tension, above which they become only metastable. Above this tension, we find a cascade of transitions between discrete toroid states that successively lower the winding number, until the ground state (rod) is reached. In this process, this model predicts a nearly constant force plateau as a function of extension, in agreement with experiment. © 2009 The American Physical Society.
Original languageEnglish
JournalPhysical Review E
DOIs
Publication statusPublished - 2009

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