A simulation model of heterochromatin formation at submolecular detail.
A simulation model of heterochromatin formation at submolecular detail.
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DOI:
10.1016/j.isci.2022.104590
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发表时间:
2022-07-15
期刊:
影响因子:
5.8
通讯作者:
Kireev, Dmitri
中科院分区:
文献类型:
--
作者:
Williams, Michael R.;Xiaokang, Yan;Hathaway, Nathaniel A.;Kireev, Dmitri
Heterochromatin is a physical state of the chromatin fiber that maintains gene repression during cell development. Although evidence exists on molecular mechanisms involved in heterochromatin formation, a detailed structural mechanism of heterochromatin formation needs a better understanding. We made use of a simple Monte Carlo simulation model with explicit representation of key molecular events to observe molecular self-organization leading to heterochromatin formation. Our simulations provide a structural interpretation of several important traits of the heterochromatinization process. In particular, this study provides a depiction of how small amounts of HP1 are able to induce a highly condensed chromatin state through HP1 dimerization and bridging of sequence-remote nucleosomes. It also elucidates structural roots of a yet poorly understood phenomenon of a nondeterministic nature of heterochromatin formation and subsequent gene repression. Experimental chromatin in vivo assay provides an unbiased estimate of time scale of repressive response to a heterochromatin-triggering event. Proposed model accurately accounts for the entropic cost of chromatin condensation Simulations rationalize the bridging hypothesis of chromatin compaction The model explains observed non-determinism of heterochromatin formation Computational molecular modeling; Cell biology
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DOI:
10.1016/j.tig.2015.11.001
发表时间:
2016-01
期刊:
Trends in genetics : TIG
影响因子:
--
作者:
Becker JS;Nicetto D;Zaret KS
通讯作者:
Zaret KS
DOI:
10.1126/science.aab2956
发表时间:
2016-02-12
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Bintu L;Yong J;Antebi YE;McCue K;Kazuki Y;Uno N;Oshimura M;Elowitz MB
通讯作者:
Elowitz MB
影响因子:
7.4
作者:
Arosio, Paolo;Hu, Kevin;Knowles, Tuomas P. J.
通讯作者:
Knowles, Tuomas P. J.
影响因子:
64.8
作者:
Falk, Martin;Feodorova, Yana;Mirny, Leonid A.
通讯作者:
Mirny, Leonid A.
影响因子:
4.6
作者:
Avdoshenko, Stanislav M.;Das, Atanu;Makarov, Dmitrii E.
通讯作者:
Makarov, Dmitrii E.