Chromatosome structure and dynamics from molecular simulations
Chromatosomes are fundamental units of chromatin structure that are formed when a linker histone protein binds to a nucleosome. The positioning of the linker histone on the nucleosome influences the packing of chromatin. Recent simulations and experiments have shown that chromatosomes adopt an ensem...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2020
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| In: |
Annual review of physical chemistry
Year: 2020, Jahrgang: 71, Pages: 101-119 |
| ISSN: | 1545-1593 |
| DOI: | 10.1146/annurev-physchem-071119-040043 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1146/annurev-physchem-071119-040043
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| Verfasserangaben: | Mehmet Ali Ozturk, Madhura De, Vlad Cojocaru, Rebecca C. Wade |
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| 520 | |a Chromatosomes are fundamental units of chromatin structure that are formed when a linker histone protein binds to a nucleosome. The positioning of the linker histone on the nucleosome influences the packing of chromatin. Recent simulations and experiments have shown that chromatosomes adopt an ensemble of structures that differ in the geometry of the linker histone-nucleosome interaction. In this article we review the application of Brownian, Monte Carlo, and molecular dynamics simulations to predict the structure of linker histone-nucleosome complexes, to study the binding mechanisms involved, and to predict how this binding affects chromatin fiber structure. These simulations have revealed the sensitivity of the chromatosome structure to variations in DNA and linker histone sequence, as well as to posttranslational modifications, thereby explaining the structural variability observed in experiments. We propose that a concerted application of experimental and computational approaches will reveal the determinants of chromatosome structural variability and how it impacts chromatin packing. | ||
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| 650 | 4 | |a chromatin | |
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| 650 | 4 | |a complex | |
| 650 | 4 | |a crystal-structure | |
| 650 | 4 | |a dna | |
| 650 | 4 | |a linker histone | |
| 650 | 4 | |a linker histone binding | |
| 650 | 4 | |a model | |
| 650 | 4 | |a multiscale molecular simulation | |
| 650 | 4 | |a nucleosome | |
| 650 | 4 | |a nucleosome core particle | |
| 650 | 4 | |a organization | |
| 650 | 4 | |a phosphorylation | |
| 650 | 4 | |a sequence | |
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