Results 31 to 40 of about 72,244 (252)

Nucleosome Switches [PDF]

open access: yesPhysical Review Letters, 2008
We present a statistical-mechanical model for the positioning of nucleosomes along genomic DNA molecules as a function of the strength of the binding potential and the chemical potential of the nucleosomes. We show that a significant section of the DNA is composed of two-level nucleosome switching regions where the nucleosome distribution undergoes a ...
David J, Schwab   +3 more
openaire   +2 more sources

Genome-scale identification of nucleosome organization by using 1000 porcine oocytes at different developmental stages. [PDF]

open access: yesPLoS ONE, 2017
The nucleosome is the basic structural unit of chromosomes, and its occupancy and distribution in promoters are crucial for the regulation of gene expression.
Chenyu Tao   +5 more
doaj   +1 more source

Evidence of association between Nucleosome Occupancy and the Evolution of Transcription Factor Binding Sites in Yeast

open access: yesBMC Evolutionary Biology, 2011
Background Divergence of transcription factor binding sites is considered to be an important source of regulatory evolution. The associations between transcription factor binding sites and phenotypic diversity have been investigated in many model ...
Chu Wen-Yi   +4 more
doaj   +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

High nucleosome occupancy is encoded at human regulatory sequences. [PDF]

open access: yesPLoS ONE, 2010
Active eukaryotic regulatory sites are characterized by open chromatin, and yeast promoters and transcription factor binding sites (TFBSs) typically have low intrinsic nucleosome occupancy. Here, we show that in contrast to yeast, DNA at human promoters,
Desiree Tillo   +9 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

Ion counting demonstrates a high electrostatic field generated by the nucleosome

open access: yeseLife, 2019
In eukaryotes, a first step towards the nuclear DNA compaction process is the formation of a nucleosome, which is comprised of negatively charged DNA wrapped around a positively charged histone protein octamer.
Magdalena Gebala   +3 more
doaj   +1 more source

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

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

Nucleosome Positioning [PDF]

open access: yesISRN Molecular Biology, 2012
Nucleosome positioning is not only related to genomic DNA compaction but also to other biological functions. After the chromatin is digested by micrococcal nuclease, nucleosomal (nucleosome-bound) DNA fragments can be sequenced and mapped on the genomic DNA sequence.
openaire   +2 more sources

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