Results 41 to 50 of about 19,515 (233)

Alteration of active and repressive histone marks during adipogenic differentiation of porcine mesenchymal stem cells

open access: yesScientific Reports, 2021
A characteristic spatial distribution of the main chromatin fractions is observed in most mammalian cell nuclei, with euchromatin localized in the interior and heterochromatin at the nuclear periphery.
Joanna Stachecka   +3 more
doaj   +1 more source

Chromatin Profiling of the Repetitive and Nonrepetitive Genomes of the Human Fungal Pathogen Candida albicans

open access: yesmBio, 2019
Eukaryotic genomes are packaged into chromatin structures that play pivotal roles in regulating all DNA-associated processes. Histone posttranslational modifications modulate chromatin structure and function, leading to rapid regulation of gene ...
Robert Jordan Price   +3 more
doaj   +1 more source

Genomic organization of H2Av containing nucleosomes in Drosophila heterochromatin. [PDF]

open access: yesPLoS ONE, 2011
H2Av is a versatile histone variant that plays both positive and negative roles in transcription, DNA repair, and chromatin structure in Drosophila.
Zhenhai Zhang, B Franklin Pugh
doaj   +1 more source

You shall not pass! A Chromatin barrier story in plants

open access: yesFrontiers in Plant Science, 2022
As in other eukaryotes, the plant genome is functionally organized in two mutually exclusive chromatin fractions, a gene-rich and transcriptionally active euchromatin, and a gene-poor, repeat-rich, and transcriptionally silent heterochromatin.
Florent Velay   +3 more
doaj   +1 more source

Chromosomal mapping of two Mariner-like elements in the grasshopper Abracris flavolineata (Orthoptera: Acrididae) reveals enrichment in euchromatin

open access: yesEuropean Journal of Entomology, 2014
The occurrence of transposable elements (TEs) is a ubiquitous characteristic of eukaryotic genomes, and these sequences are highly abundant in some species. Due to their large genomes, grasshoppers (Orthoptera) appear to be potentially good candidates in
Octavio M. PALACIOS-GIMENEZ   +2 more
doaj   +1 more source

TALEN outperforms Cas9 in editing heterochromatin target sites

open access: yesNature Communications, 2021
While Cas9 outperforms TALENs in euchromatin, it is less efficient in heterochromatic regions. Here the authors, using single-molecule imaging, show that Cas9 uses a less efficient search strategy compared to TALENs in these regions.
Surbhi Jain   +12 more
doaj   +1 more source

Image-based elastography of heterochromatin and euchromatin domains in the deforming cell nucleus

open access: yesbioRxiv, 2020
Chromatin of the eukaryotic cell nucleus comprises of microscopically dense heterochromatin and loosely packed euchromatin domains, each with distinct transcriptional ability and roles in cellular mechanotransduction.
Soham Ghosh   +3 more
semanticscholar   +1 more source

Evolutionary History of Alpha Satellite DNA Repeats Dispersed within Human Genome Euchromatin

open access: yesGenome Biology and Evolution, 2020
Major human alpha satellite DNA repeats are preferentially assembled within (peri)centromeric regions but are also dispersed within euchromatin in the form of clustered or short single repeat arrays.
I. Feliciello   +4 more
semanticscholar   +1 more source

Insulator-based loops mediate the spreading of H3K27me3 over distant micro-domains repressing euchromatin genes

open access: yesGenome Biology, 2020
Background Chromosomes are subdivided spatially to delimit long-range interactions into topologically associating domains (TADs). TADs are often flanked by chromatin insulators and transcription units that may participate in such demarcation. Remarkably,
Alexandre Heurteau   +6 more
semanticscholar   +1 more source

Epigenetic reactivation of LINE‐1 retrotransposon disrupts NuRD corepressor functions and induces oncogenic transformation in human bronchial epithelial cells

open access: yesMolecular Oncology, 2018
Long interspersed nuclear element‐1 (LINE‐1 or L1) reactivation is linked to poor prognosis in non‐small‐cell lung carcinoma (NSCLC), but the molecular bases of this response remain largely unknown.
Pasano Bojang Jr., Kenneth S. Ramos
doaj   +1 more source

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