Local geometry and elasticity in compact chromatin structure

EF Koslover, CJ Fuller, AF Straight, AJ Spakowitz - Biophysical journal, 2010 - cell.com
The hierarchical packaging of DNA into chromatin within a eukaryotic nucleus plays a
pivotal role in both the accessibility of genomic information and the dynamics of replication …

Evidence for heteromorphic chromatin fibers from analysis of nucleosome interactions

SA Grigoryev, G Arya, S Correll… - Proceedings of the …, 2009 - National Acad Sciences
The architecture of the chromatin fiber, which determines DNA accessibility for transcription
and other template-directed biological processes, remains unknown. Here we investigate …

Changing chromatin fiber conformation by nucleosome repositioning

O Müller, N Kepper, R Schöpflin, R Ettig, K Rippe… - Biophysical journal, 2014 - cell.com
Chromatin conformation is dynamic and heterogeneous with respect to nucleosome
positions, which can be changed by chromatin remodeling complexes in the cell. These …

Nucleosome positioning and composition modulate in silico chromatin flexibility

N Clauvelin, P Lo, OI Kulaeva… - Journal of Physics …, 2015 - iopscience.iop.org
The dynamic organization of chromatin plays an essential role in the regulation of gene
expression and in other fundamental cellular processes. The underlying physical basis of …

Exploring the conformational space of chromatin fibers and their stability by numerical dynamic phase diagrams

R Stehr, R Schöpflin, R Ettig, N Kepper, K Rippe… - Biophysical journal, 2010 - cell.com
The three-dimensional structure of chromatin affects DNA accessibility and is therefore a key
regulator of gene expression. However, the path of the DNA between consecutive …

Nucleosome geometry and internucleosomal interactions control the chromatin fiber conformation

N Kepper, D Foethke, R Stehr, G Wedemann, K Rippe - Biophysical journal, 2008 - cell.com
Based on model structures with atomic resolution, a coarse-grained model for the
nucleosome geometry was implemented. The dependence of the chromatin fiber …

Nucleosome shape dictates chromatin fiber structure

M Depken, H Schiessel - Biophysical journal, 2009 - cell.com
In addition to being the gateway for all access to the eukaryotic genome, chromatin has in
recent years been identified as carrying an epigenetic code regulating transcriptional …

Computational modeling predicts the structure and dynamics of chromatin fiber

DA Beard, T Schlick - Structure, 2001 - cell.com
Background: The compact form of the chromatin fiber is a critical regulator of fundamental
processes such as transcription and replication. These reactions can occur only when the …

Structure-driven homology pairing of chromatin fibers: the role of electrostatics and protein-induced bridging

AG Cherstvy, VB Teif - Journal of biological physics, 2013 - Springer
Chromatin domains formed in vivo are characterized by different types of 3D organization of
interconnected nucleosomes and architectural proteins. Here, we quantitatively test a …

Geometrical heterogeneity dominates thermal fluctuations in facilitating chromatin contacts

B Beltran, D Kannan, Q MacPherson, AJ Spakowitz - Physical Review Letters, 2019 - APS
Within a living cell, the myriad of proteins that bind DNA introduce heterogeneously spaced
kinks into an otherwise semiflexible DNA double helix. To investigate the effects of …