Results 61 to 70 of about 109,383 (351)
High-resolution and high-accuracy topographic and transcriptional maps of the nucleosome barrier. [PDF]
, 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
TRF1 and TRF2 binding to telomeres is modulated by nucleosomal organization [PDF]
, 2015 The ends of eukaryotic chromosomes need to be protected from the activation of a DNA damage response that leads the cell to replicative senescence or apoptosis.
Alicata, Claudia +8 more
core +3 more sources
Epigenetics, 2018 Previous work in Saccharomyces cerevisiae identified three residues located in close proximity to each other on the side of the nucleosome whose integrity is required for proper association of the Spt16 component of the FACT complex across transcribed ...
Eugene Nyamugenda +8 more
doaj +1 more source
Novel mechanistic insights into the role of Mer2 as the keystone of meiotic DNA break formation
eLife, 2021 In meiosis, DNA double-strand break (DSB) formation by Spo11 initiates recombination and enables chromosome segregation. Numerous factors are required for Spo11 activity, and couple the DSB machinery to the development of a meiosis-specific ‘axis ...
Dorota Rousová +10 more
doaj +1 more source
ATP-dependent chromatosome remodeling [PDF]
, 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
Epichromatin and chromomeres: a ‘fuzzy’ perspective [PDF]
Open Biology, 2018 ‘Epichromatin’, the surface of chromatin beneath the interphase nuclear envelope (NE) or at the surface of mitotic chromosomes, was discovered by immunostaining with a specific bivalent mouse monoclonal anti-nucleosome antibody (mAb PL2-6). ‘Chromomeres’,
Donald E. Olins, Ada L. Olins
doaj +1 more source
Nucleosomes affect local transformation efficiency [PDF]
, 2012 Genetic transformation is a natural process during which foreign DNA enters a cell and integrates into the genome. Apart from its relevance for horizontal gene transfer in nature, transformation is also the cornerstone of today's recombinant gene ...
Aslankoohi, Elham +6 more
core +2 more sources
Cryo-EM Structures of Centromeric Tri-nucleosomes Containing a Central CENP-A Nucleosome.
Structure, 2019 The histone H3 variant CENP-A is a crucial epigenetic marker for centromere specification. CENP-A forms a characteristic nucleosome and dictates the higher-order configuration of centromeric chromatin.
Y. Takizawa +11 more
semanticscholar +1 more source
Identification of H3K4me1-associated proteins at mammalian enhancers. [PDF]
, 2017 Enhancers act to regulate cell-type-specific gene expression by facilitating the transcription of target genes. In mammalian cells, active or primed enhancers are commonly marked by monomethylation of histone H3 at lysine 4 (H3K4me1) in a cell-type ...
Albuquerque, Claudio P +13 more
core +2 more sources
A systematic analysis of nucleosome core particle and nucleosome-nucleosome stacking structure [PDF]
Scientific Reports, 2018 AbstractChromatin condensation is driven by the energetically favourable interaction between nucleosome core particles (NCPs). The close NCP-NCP contact, stacking, is a primary structural element of all condensed states of chromatin in vitro and in vivo.
Korolev, Nikolay +2 more
openaire +3 more sources