Results 21 to 30 of about 89,193 (329)

Nucleosome—nucleosome interaction in chromatin

open access: yesFEBS Letters, 1979
The available data suggest that transcriptional activity of chromatin is connected with its structural changes [ 1,2]. According to the electron microscope evidence, the elementary 100 A chromatin thread can exist in two main states, i.e., in a compact state, which is characterized by tight packing of nucleosomes and in an extended state when the ...
S. B. Svetlikova   +2 more
openaire   +3 more sources

Circulating Nucleosomes and Nucleosome Modifications as Biomarkers in Cancer [PDF]

open access: yesCancers, 2017
Traditionally the stratification of many cancers involves combining tumour and clinicopathological features (e.g., patient age; tumour size, grade, receptor status and location) to inform treatment options and predict recurrence risk and survival. However, current biomarkers often require invasive excision of the tumour for profiling, do not allow ...
Peter McAnena   +2 more
openaire   +2 more sources

Two distinct modes of nucleosome modulation associated with different degrees of dependence of nucleosome positioning on the underlying DNA sequence

open access: yesBMC Genomics, 2009
Background The nucleosome is the fundamental unit of eukaryotic genomes. Its positioning plays a central role in diverse cellular processes that rely on access to genomic DNA.
Wang Jiang   +6 more
doaj   +1 more source

Replicating nucleosomes [PDF]

open access: yesScience Advances, 2015
Reestablishment of the nucleosome landscape behind the replication fork is fundamental for epigenetic memory during development.
Ramachandran, Srinivas, Henikoff, Steven
openaire   +2 more sources

Crystal structures of heterotypic nucleosomes containing histones H2A.Z and H2A [PDF]

open access: yesOpen Biology, 2016
H2A.Z is incorporated into nucleosomes located around transcription start sites and functions as an epigenetic regulator for the transcription of certain genes.
Naoki Horikoshi   +3 more
doaj   +1 more source

Nucleosome plasticity is a critical element of chromatin liquid–liquid phase separation and multivalent nucleosome interactions

open access: yesNature Communications, 2020
Liquid–liquid phase separation (LLPS) is an important mechanism that helps explain the membraneless compartmentalization of the nucleus. Because chromatin compaction and LLPS are collective phenomena, linking their modulation to the physicochemical ...
Stephen E. Farr   +4 more
semanticscholar   +1 more source

Cryo-EM structure of SETD2/Set2 methyltransferase bound to a nucleosome containing oncohistone mutations

open access: yesCell Discovery, 2021
Substitution of lysine 36 with methionine in histone H3.3 (H3.3K36M) is an oncogenic mutation that inhibits SETD2-mediated histone H3K36 tri-methylation in tumors.
Yingying Liu   +9 more
doaj   +1 more source

HP1 reshapes the nucleosome core to promote phase separation of heterochromatin

open access: yesNature, 2019
Heterochromatin affects genome function at many levels. It enables heritable gene repression, maintains chromosome integrity and provides mechanical rigidity to the nucleus1,2.
S. Sanulli   +8 more
semanticscholar   +1 more source

Dynamic nucleosome landscape elicits a noncanonical GATA2 pioneer model

open access: yesNature Communications, 2022
Here the authors provide a multi-omic study of the nucleosome landscape in LNCaP cells and observe nine functional nucleosome states each with characteristic nucleosome footprints.
Tianbao Li   +7 more
doaj   +1 more source

Conservation of Nucleosome Positions in Duplicated and Orthologous Gene Pairs

open access: yesThe Scientific World Journal, 2012
Although nucleosome positions tend to be conserved in gene promoters, whether they are conserved in duplicated and orthologous genes is unknown. In order to elucidate how nucleosome positions are conserved between duplicated and orthologous gene pairs, I
Hiromi Nishida
doaj   +1 more source

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