Topological constraints with optimal length promote the formation of chromosomal territories at weakened degree of phase separation

J Wei, H Tian, R Zhou, Y Shao, F Song… - The Journal of Physical …, 2021 - ACS Publications
It is generally agreed that the nuclei of eukaryotic cells at interphase are partitioned into
disjointed territories, with distinct regions occupied by certain chromosomes. However, the …

Structure and dynamics of interphase chromosomes

A Rosa, R Everaers - PLoS computational biology, 2008 - journals.plos.org
During interphase chromosomes decondense, but fluorescent in situ hybridization
experiments reveal the existence of distinct territories occupied by individual chromosomes …

Entropy gives rise to topologically associating domains

PA Vasquez, C Hult, D Adalsteinsson… - Nucleic Acids …, 2016 - academic.oup.com
We investigate chromosome organization within the nucleus using polymer models whose
formulation is closely guided by experiments in live yeast cells. We employ bead-spring …

Steric repulsion introduced by loop constraints modulates the microphase separation of chromatins

J Wei, Y Xue, Y Liu, H Tian, Y Shao… - The Journal of Chemical …, 2024 - pubs.aip.org
Within the confines of a densely populated cell nucleus, chromatin undergoes intricate
folding, forming loops, domains, and compartments under the governance of topological …

Lattice animal model of chromosome organization

BVS Iyer, G Arya - Physical Review E—Statistical, Nonlinear, and Soft …, 2012 - APS
Polymer models tied together by constraints of looping and confinement have been used to
explain many of the observed organizational characteristics of interphase chromosomes …

Topological constraints and finite-size effects in quantitative polymer models of chromatin organization

AZ Abdulla, MMC Tortora, C Vaillant, D Jost - Macromolecules, 2023 - ACS Publications
Polymer physics simulations have provided a versatile framework to quantitatively explore
the complex mechanisms driving chromosome organization. However, simulating whole …

Compartmentalization with nuclear landmarks yields random, yet precise, genome organization

K Kamat, Z Lao, Y Qi, Y Wang, J Ma, B Zhang - Biophysical Journal, 2023 - cell.com
The 3D organization of eukaryotic genomes plays an important role in genome function.
While significant progress has been made in deciphering the folding mechanisms of …

The short-sequence design of DNA and its involvement in the 3-D structure of the genome

G Lamolle, V Sabbia, H Musto, G Bernardi - Scientific Reports, 2018 - nature.com
Recent investigations have shown that isochores are characterized by a 3-D structure which
is primarily responsible for the topology of chromatin domains. More precisely, an analysis of …

Effects of topological constraints on globular polymers

MV Imakaev, KM Tchourine, SK Nechaev, LA Mirny - Soft matter, 2015 - pubs.rsc.org
Topological constraints can affect both equilibrium and dynamic properties of polymer
systems and can play a role in the organization of chromosomes. Despite many theoretical …

Crumpled polymer with loops recapitulates key features of chromosome organization

KE Polovnikov, HB Brandão, S Belan, B Slavov… - Physical Review X, 2023 - APS
Chromosomes are exceedingly long topologically constrained polymers compacted in a cell
nucleus. We recently suggested that chromosomes are organized into loops by an active …