RNA polymerase II stalling promotes nucleosome occlusion and pTEFb recruitment to drive immortalization by Epstein-Barr virus [PDF]
, 2011 Epstein-Barr virus (EBV) immortalizes resting B-cells and is a key etiologic agent in the development of numerous cancers. The essential EBV-encoded protein EBNA 2 activates the viral C promoter (Cp) producing a message of ~120 kb that is differentially ...
A Bakos +75 more
core +3 more sources
BMC Genomics, 2010 Background Recently, a number of high-resolution genome-wide maps of nucleosome locations in S. cerevisiae have been derived experimentally. However, nucleosome positions are determined in vivo by the combined effects of numerous factors.
Deng Yangyang +6 more
doaj +1 more source
Linking stochastic fluctuations in chromatin structure and gene expression. [PDF]
PLoS Biology, 2013 The number of mRNA and protein molecules expressed from a single gene molecule fluctuates over time. These fluctuations have been attributed, in part, to the random transitioning of promoters between transcriptionally active and inactive states, causing ...
Christopher R Brown +4 more
doaj +1 more source
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
Theory of Nucleosome Corkscrew Sliding in the Presence of Synthetic DNA Ligands
, 2004 Histone octamers show a heat-induced mobility along DNA. Recent theoretical studies have established two mechanisms that are qualitatively and quantitatively compatible with in vitro experiments on nucleosome sliding: Octamer repositiong through one ...
Kulic, Igor M. +2 more
core +2 more sources
Epigenetic aberrations and cancer [PDF]
, 2006 The correlation between epigenetic aberrations and disease underscores the importance of epigenetic mechanisms.
Brown, Mark A., Ducasse, Miryam
core +3 more sources
Nucleosome-coupled expression differences in closely-related species
BMC Genomics, 2011 Background Genome-wide nucleosome occupancy is negatively related to the average level of transcription factor motif binding based on studies in yeast and several other model organisms.
Gebbia Marinella +6 more
doaj +1 more source
Probing the (H3-H4)(2) histone tetramer structure using pulsed EPR spectroscopy combined with site-directed spin labelling [PDF]
, 2009 The (H3-H4)2 histone tetramer forms the central core of nucleosomes and, as such, plays a prominent role in assembly, disassembly and positioning of nucleosomes.
Bowman, A. +4 more
core +5 more sources
Understanding the role of chromatin remodeling in the regulation of circadian transcription in Drosophila. [PDF]
, 2015 Circadian clocks enable organisms to anticipate daily changes in the environment and coordinate temporal rhythms in physiology and behavior with the 24-h day-night cycle. The robust cycling of circadian gene expression is critical for proper timekeeping,
Chiu, Joanna C +2 more
core +1 more source
Analysis of nucleosome repositioning by yeast ISWI and Chd1 chromatin remodeling complexes [PDF]
, 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