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Title: Role of Histone Tails in Structural Stability of the Nucleosome

Abstract

Histone tails play an important role in nucleosome structure and dynamics. Here we investigate the effect of truncation of histone tails H3, H4, H2A and H2B on nucleosome structure with 100 ns all-atom molecular dynamics simulations. Tail domains of H3 and H2B show propensity of α-helics formation during the intact nucleosome simulation. On truncation of H4 or H2B tails no structural change occurs in histones. However, H3 or H2A tail truncation results in structural alterations in the histone core domain, and in both the cases the structural change occurs in the H2Aα3 domain. We also find that the contacts between the histone H2A C terminal docking domain and surrounding residues are destabilized upon H3 tail truncation. The relation between the present observations and corresponding experiments is discussed.

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. of Heidelberg (Germany). Interdisciplinary Center for Scientific Computing (IWR). Computational Molecular Biophysics
  2. German Cancer Research Center (DKFZ), Heidelberg (Germany). Biophysics of Macromolecules
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Molecular Biophysics
  4. German Cancer Research Center (DKFZ), Heidelberg (Germany). Biophysics of Macromolecules
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division; German Research Foundation (DFG)
OSTI Identifier:
1627219
Grant/Contract Number:  
AC05-00OR22725; SM 63/11-1
Resource Type:
Accepted Manuscript
Journal Name:
PLoS Computational Biology (Online)
Additional Journal Information:
Journal Name: PLoS Computational Biology (Online); Journal Volume: 7; Journal Issue: 12; Journal ID: ISSN 1553-7358
Publisher:
Public Library of Science
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 97 MATHEMATICS AND COMPUTING; Biochemistry & Molecular Biology; Mathematical & Computational Biology

Citation Formats

Biswas, Mithun, Voltz, Karine, Smith, Jeremy C., and Langowski, Jörg. Role of Histone Tails in Structural Stability of the Nucleosome. United States: N. p., 2011. Web. doi:10.1371/journal.pcbi.1002279.
Biswas, Mithun, Voltz, Karine, Smith, Jeremy C., & Langowski, Jörg. Role of Histone Tails in Structural Stability of the Nucleosome. United States. https://doi.org/10.1371/journal.pcbi.1002279
Biswas, Mithun, Voltz, Karine, Smith, Jeremy C., and Langowski, Jörg. Thu . "Role of Histone Tails in Structural Stability of the Nucleosome". United States. https://doi.org/10.1371/journal.pcbi.1002279. https://www.osti.gov/servlets/purl/1627219.
@article{osti_1627219,
title = {Role of Histone Tails in Structural Stability of the Nucleosome},
author = {Biswas, Mithun and Voltz, Karine and Smith, Jeremy C. and Langowski, Jörg},
abstractNote = {Histone tails play an important role in nucleosome structure and dynamics. Here we investigate the effect of truncation of histone tails H3, H4, H2A and H2B on nucleosome structure with 100 ns all-atom molecular dynamics simulations. Tail domains of H3 and H2B show propensity of α-helics formation during the intact nucleosome simulation. On truncation of H4 or H2B tails no structural change occurs in histones. However, H3 or H2A tail truncation results in structural alterations in the histone core domain, and in both the cases the structural change occurs in the H2Aα3 domain. We also find that the contacts between the histone H2A C terminal docking domain and surrounding residues are destabilized upon H3 tail truncation. The relation between the present observations and corresponding experiments is discussed.},
doi = {10.1371/journal.pcbi.1002279},
journal = {PLoS Computational Biology (Online)},
number = 12,
volume = 7,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2011},
month = {Thu Dec 15 00:00:00 EST 2011}
}

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