Results 61 to 70 of about 186,634 (241)

Chromatin-Based Regulation of Plant Root Development

open access: yesFrontiers in Plant Science, 2018
Plant is endowed with sessile habit and nutrient acquisition mainly through the root organ, which also provides an excellent model to study stem cell fate and asymmetric division due to well-organized cell layers and relatively simple cell types in root ...
Dong-Hong Chen   +3 more
doaj   +1 more source

Classification of Promoters Based on the Combination of Core Promoter Elements Exhibits Different Histone Modification Patterns. [PDF]

open access: yesPLoS ONE, 2016
Four different histones (H2A, H2B, H3, and H4; two subunits each) constitute a histone octamer, around which DNA wraps to form histone-DNA complexes called nucleosomes.
Yayoi Natsume-Kitatani   +1 more
doaj   +1 more source

ATP-dependent chromatosome remodeling [PDF]

open access: yes, 2008
Chromatin serves to package, protect and organize the complex eukaryotic genomes to assure their stable inheritance over many cell generations. At the same time, chromatin must be dynamic to allow continued use of DNA during a cell's lifetime.
Dimitrov S.   +6 more
core   +1 more source

Analysis of nucleosome repositioning by yeast ISWI and Chd1 chromatin remodeling complexes [PDF]

open access: yes, 2006
ISWI proteins form the catalytic core of a subset of ATP-dependent chromatin remodelling activities in eukaryotes from yeast to man. Many of these complexes have been found to reposition nucleosomes, but with different directionalities.
Alen   +33 more
core   +4 more sources

A species-specific nucleosomal signature defines a periodic distribution of amino acids in proteins [PDF]

open access: yesOpen Biology, 2015
Nucleosomes are the basic structural units of chromatin. Most of the yeast genome is organized in a pattern of positioned nucleosomes that is stably maintained under a wide range of physiological conditions.
Luis Quintales   +4 more
doaj   +1 more source

Catching Nucleosome by Its Decorated Tails Determines Its Functional States

open access: yesFrontiers in Genetics, 2022
The fundamental packaging unit of chromatin, i.e., nucleosome, consists of ∼147 bp of DNA wrapped around a histone octamer composed of the core histones, H2A, H2B, H3, and H4, in two copies each.
Parveen Sehrawat   +2 more
doaj   +1 more source

Snf2 family ATPases and DExx box helicases:differences and unifying concepts from high-resolution crystal structures [PDF]

open access: yes, 2006
Proteins with sequence similarity to the yeast Snf2 protein form a large family of ATPases that act to alter the structure of a diverse range of DNA–protein structures including chromatin. Snf2 family enzymes are related in sequence to DExx box helicases,
Aasland   +95 more
core   +4 more sources

CHROMATIN ACCESSIBILITY TO DNA MINOR GROOVE LIGANDS IN VITRO: ROLE OF LINKER HISTONES AND AMINO-TERMINAL DOMAINS OF OCT AMER HISTONES

open access: yesJournal of Biological Research, 2000
The processes of eukaryotic gene expression must be considered in the light of the intrinsically dynamic properties of chromatin, and, in particular, of the basic level of it which is the nucleosome.
R. Foderà   +3 more
doaj   +1 more source

High-resolution and high-accuracy topographic and transcriptional maps of the nucleosome barrier. [PDF]

open access: yes, 2019
Nucleosomes represent mechanical and energetic barriers that RNA Polymerase II (Pol II) must overcome during transcription. A high-resolution description of the barrier topography, its modulation by epigenetic modifications, and their effects on Pol II ...
Brown, Aidan I   +9 more
core   +2 more sources

Acetylation of histone H3 at lysine 64 regulates nucleosome dynamics and facilitates transcription

open access: yeseLife, 2014
Post-translational modifications of proteins have emerged as a major mechanism for regulating gene expression. However, our understanding of how histone modifications directly affect chromatin function remains limited.
Vincenzo Di Cerbo   +19 more
doaj   +1 more source

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