Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87537
Title: A systematic analysis of nucleosome core particle and nucleosome-nucleosome stacking structure
Authors: Korolev, Nikolay
Lyubartsev, Alexander P.
Nordenskiöld, Lars
Keywords: Nucleosome Core Particles (NCPs)
Stacked Nucleosomes
Issue Date: 2018
Source: Korolev, N., Lyubartsev, A. P., & Nordenskiöld, L. (2018). A systematic analysis of nucleosome core particle and nucleosome-nucleosome stacking structure. Scientific Reports, 8(1), 1543-.
Series/Report no.: Scientific Reports
Abstract: Chromatin condensation is driven by the energetically favourable interaction between nucleosome core particles (NCPs). The close NCP-NCP contact, stacking, is a primary structural element of all condensed states of chromatin in vitro and in vivo. However, the molecular structure of stacked nucleosomes as well as the nature of the interactions involved in its formation have not yet been systematically studied. Here we undertake an investigation of both the structural and physico-chemical features of NCP structure and the NCP-NCP stacking. We introduce an “NCP-centred” set of parameters (NCP-NCP distance, shift, rise, tilt, and others) that allows numerical characterisation of the mutual positions of the NCPs in the stacking and in any other structures formed by the NCP. NCP stacking in more than 140 published NCP crystal structures were analysed. In addition, coarse grained (CG) MD simulations modelling NCP condensation was carried out. The CG model takes into account details of the nucleosome structure and adequately describes the long range electrostatic forces as well as excluded volume effects acting in chromatin. The CG simulations showed good agreement with experimental data and revealed the importance of the H2A and H4 N-terminal tail bridging and screening as well as tail-tail correlations in the stacked nucleosomes.
URI: https://hdl.handle.net/10356/87537
http://hdl.handle.net/10220/45421
ISSN: 2045-2322
DOI: http://dx.doi.org/10.1038/s41598-018-19875-0
Rights: © 2018 The Author(s) (Nature Publishing Group). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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