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• W2952164529 endingPage "9200" @default.
• W2952164529 startingPage "9189" @default.
• W2952164529 abstract "In Eukaryotes, DNA is wound around the histone octamer forming the basic chromatin unit, the nucleosome. Atomic structures have been obtained from crystallography and single particle cryo-electron microscopy (cryoEM) of identical engineered particles. But native nucleosomes are dynamical entities with diverse DNA sequence and histone content, and little is known about their conformational variability, especially in the cellular context. Using cryoEM and tomography of vitreous sections we analyse native nucleosomes, both in vitro, using purified particles solubilized at physiologically relevant concentrations (25-50%), and in situ, within interphase nuclei. We visualize individual nucleosomes at a level of detail that allows us to measure the distance between the DNA gyres wrapped around. In concentrated solutions, we demonstrate a salt-dependent transition, with a high salt compact conformation resembling the canonical nucleosome and an open low salt one, closer to nuclear nucleosomes. Although further particle characterization and cartography are needed to understand the relationship between this conformational variability and chromatin functional states, this work opens a route to chromatin exploration in situ." @default.
• W2952164529 created "2019-06-27" @default.
• W2952164529 creator A5001184663 @default.
• W2952164529 creator A5015427652 @default.
• W2952164529 creator A5047992726 @default.
• W2952164529 creator A5060815562 @default.
• W2952164529 creator A5084407240 @default.
• W2952164529 creator A5088606060 @default.
• W2952164529 date "2018-07-25" @default.
• W2952164529 modified "2023-10-14" @default.
• W2952164529 title "Nucleosome conformational variability in solution and in interphase nuclei evidenced by cryo-electron microscopy of vitreous sections" @default.
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• W2952164529 doi "https://doi.org/10.1093/nar/gky670" @default.
• W2952164529 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6158616" @default.
• W2952164529 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30053160" @default.
• W2952164529 hasPublicationYear "2018" @default.

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