Results 71 to 80 of about 1,311,035 (215)
Principles of meiotic chromosome assembly revealed in S. cerevisiae [PDF]
, 2019 During meiotic prophase, chromosomes organise into a series of chromatin loops emanating from a proteinaceous axis, but the mechanisms of assembly remain unclear.
A Goloborodko +69 more
core +2 more sources
Are There Knots in Chromosomes?
Polymers, 2017 Recent developments have for the first time allowed the determination of three-dimensional structures of individual chromosomes and genomes in nuclei of single haploid mouse embryonic stem (ES) cells based on Hi–C chromosome conformation contact data. Although these first structures have a relatively low resolution, they provide the first experimental ...
Tim J. Stevens +5 more
openaire +3 more sources
Cdt1 stabilizes an open MCM ring for helicase loading
Nature Communications, 2017 The loading and activation of the Mcm2-7 replicative helicase couples cell cycle progression to DNA replication. Here the authors use X-ray crystallography and single-particle electron microscopy to demonstrate how Ctd1 functions to promote MCM loading ...
Jordi Frigola +9 more
doaj +1 more source
Using Orientation to Distinguish Overlapping Chromosomes [PDF]
arXiv, 2022 A difficult step in the process of karyotyping is segmenting chromosomes that touch or overlap. In an attempt to automate the process, previous studies turned to Deep Learning methods, with some formulating the task as a semantic segmentation problem. These models treat separate chromosome instances as semantic classes, which we show to be problematic,
arxiv
The origin of human chromosome 2 analyzed by comparative chromosome mapping with a DNA microlibrary [PDF]
, 1994 Fluorescencein situ hybridization (FISH) of microlibraries established from distinct chromosome subregions can test the evolutionary conservation of chromosome bands as well as chromosomal rearrangements that occurred during primate evolution and will ...
A Baldini +32 more
core +1 more source
Molecular Biology of the Cell, 2011 Recent advances in our understanding of chromosome behavior have been made possible by the development of cutting-edge cytological and molecular techniques. Presentations in this Minisymposium applied these techniques to a diverse set of topics. Sarah Elgin (Washington University) described her lab’s studies on the 1360 transposable element in ...
Lori L. Wallrath, David M. Gilbert
openaire +3 more sources
Functional crosstalk between the cohesin loader and chromatin remodelers
Nature Communications, 2022 Chromatin remodelers direct the cohesin loader to nucleosome depleted regions where cohesin accesses chromosomes. Muñoz et al. now show that the cohesin loader in turn is a biochemical activator of a chromatin remodeler, helping to clear ...
Sofía Muñoz +5 more
doaj +1 more source
Where and when to start: Regulating DNA replication origin activity in eukaryotic genomes
Nucleus, 2023 In eukaryotic genomes, hundreds to thousands of potential start sites of DNA replication named origins are dispersed across each of the linear chromosomes.
Clare S.K. Lee +2 more
doaj +1 more source
AutoKary2022: A Large-Scale Densely Annotated Dataset for Chromosome Instance Segmentation [PDF]
arXiv, 2023 Automated chromosome instance segmentation from metaphase cell microscopic images is critical for the diagnosis of chromosomal disorders (i.e., karyotype analysis). However, it is still a challenging task due to lacking of densely annotated datasets and the complicated morphologies of chromosomes, e.g., dense distribution, arbitrary orientations, and ...
arxiv