Internal Friction and Nonequilibrium Unfolding of Polymeric Globules
Name
Alexander-Katz-2009-Internal Friction an.pdf
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Author(s)
Wada, Hirofumi
Netz, Roland R.
Alexander-Katz, Alfredo
Date Issued
July 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Alexander-Katz, Alfredo , Hirofumi Wada, and Roland R. Netz. “Internal Friction and Nonequilibrium Unfolding of Polymeric Globules.” Physical Review Letters 103.2 (2009): 028102. © 2009 The American Physical Society.
Version
Final published version
Abstract
The stretching response of a single collapsed homopolymer is studied using Brownian dynamic simulations. The irreversibly dissipated work is found to be dominated by internal friction effects below the collapse temperature, and the internal viscosity grows exponentially with the effective cohesive strength between monomers. These results explain friction effects of globular DNA and are relevant for dissipation at intermediate stages of protein folding.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.028102
