Literature DB >> 21044596

Effect of spontaneous twist on DNA minicircles.

Shlomi Medalion1, David A Kessler, Yitzhak Rabin.   

Abstract

Monte Carlo simulations are used to study the effect of spontaneous (intrinsic) twist on the conformation of topologically equilibrated minicircles of dsDNA. The twist, writhe, and radius of gyration distributions and their moments are calculated for different spontaneous twist angles and DNA lengths. The average writhe and twist deviate in an oscillatory fashion (with the period of the double helix) from their spontaneous values, as one spans the range between two neighboring integer values of intrinsic twist. Such deviations vanish in the limit of long DNA plasmids.
Copyright © 2010 Biophysical Society. Published by Elsevier Inc. All rights reserved.

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Year:  2010        PMID： 21044596      PMCID： PMC2966040          DOI： 10.1016/j.bpj.2010.08.021

Source DB:  PubMed          Journal:  Biophys J        ISSN： 0006-3495            Impact factor:   4.033


  19 in total

1.  DNA rings with multiple energy minima.

Authors:  P B Furrer; R S Manning; J H Maddocks
Journal:  Biophys J       Date:  2000-07       Impact factor: 4.033

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Authors:  B D Coleman; D Swigon; I Tobias
Journal:  Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics       Date:  2000-01

3.  Coupling of twist and writhe in short DNA loops.

Authors:  Shlomi Medalion; Shay M Rappaport; Yitzhak Rabin
Journal:  J Chem Phys       Date:  2010-01-28       Impact factor: 3.488

4.  Gapped DNA and cyclization of short DNA fragments.

Authors:  Quan Du; Maria Vologodskaia; Heiko Kuhn; Maxim Frank-Kamenetskii; Alexander Vologodskii
Journal:  Biophys J       Date:  2005-03-18       Impact factor: 4.033

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Authors:  J D Moroz; P Nelson
Journal:  Proc Natl Acad Sci U S A       Date:  1997-12-23       Impact factor: 11.205

6.  The effect of intrinsic curvature on conformational properties of circular DNA.

Authors:  V Katritch; A Vologodskii
Journal:  Biophys J       Date:  1997-03       Impact factor: 4.033

7.  The degree of unwinding of the DNA helix by ethidium. I. Titration of twisted PM2 DNA molecules in alkaline cesium chloride density gradients.

Authors:  J C Wang
Journal:  J Mol Biol       Date:  1974-11-15       Impact factor: 5.469

8.  The helical repeat of DNA at high temperature.

Authors:  M Duguet
Journal:  Nucleic Acids Res       Date:  1993-02-11       Impact factor: 16.971

9.  DNA flexibility studied by covalent closure of short fragments into circles.

Authors:  D Shore; J Langowski; R L Baldwin
Journal:  Proc Natl Acad Sci U S A       Date:  1981-08       Impact factor: 11.205

10.  Mapping the phase diagram of the writhe of DNA nanocircles using atomistic molecular dynamics simulations.

Authors:  Sarah A Harris; Charles A Laughton; Tanniemola B Liverpool
Journal:  Nucleic Acids Res       Date:  2007-11-05       Impact factor: 16.971
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