Results 81 to 90 of about 178,325 (322)
The role of polymer architecture in the entropy driven segregation and spatial organization of bacterial chromosomes [PDF]
arXiv, 2021 Entropic repulsion between DNA ring polymers under confinement is the key mechanism governing the spatial segregation of bacterial chromosomes, although it remains incompletely understood how proteins aid the process of entropic segregation. Here we establish that `internal' loops within a modified-ring polymer architecture enhances entropic repulsion ...
arxiv
Segregated structure of ring polymer melts near the surface: Molecular dynamics simulation study [PDF]
Soft Matter. 2015 Aug 14;11(30):6018-28, 2015 We study structural properties of a ring polymeric melt confined in a film in comparison to a linear counterpart using molecular dynamics simulations. Local structure orderings of ring and linear polymers in the vicinity of the surface are similar to each other because the length scale of surface-monomer excluded volume interaction is smaller than the ...
arxiv +1 more source
Advanced Science, EarlyView.MYC is a transcription factor (TF) that binds DNA near transcriptional start sites (TSSs) and within enhancer elements. Here, unappreciated sites of MYC binding in the vicinity of transcriptional end sites (TESs) of many genes in multiple cell types in association with numerous other TFs are described previously.
Huabo Wang +5 more
wiley +1 more source
Cell-Cycle Regulation of Dynamic Chromosome Association of the Condensin Complex
Cell Reports, 2018 Summary: Eukaryotic cells inherit their genomes in the form of chromosomes, which are formed from the compaction of interphase chromatin by the condensin complex. Condensin is a member of the structural maintenance of chromosomes (SMC) family of ATPases,
Rahul Thadani +4 more
doaj
STAR Protocols, 2020 Summary: Amine-reactive Tandem Mass Tag 10plex (TMT10plex) labeling permits multiplexed protein identification and quantitative analysis by tandem mass spectrometry (MS/MS).
Andrew W. Jones +4 more
doaj
Biology Open, 2017 Post-translational protein modification such as phosphorylation and ubiquitination are critical during mitosis to ensure proper timing and progression of chromosome segregation.
Lan Lin, Li Chen, Phong T. Tran
doaj +1 more source
Modeling and mechanical perturbations reveal how spatially regulated anchorage gives rise to spatially distinct mechanics across the mammalian spindle [PDF]
arXiv, 2022 During cell division, the spindle generates force to move chromosomes. In mammals, microtubule bundles called kinetochore-fibers (k-fibers) attach to and segregate chromosomes. To do so, k-fibers must be robustly anchored to the dynamic spindle. We previously developed microneedle manipulation to mechanically challenge k-fiber anchorage, and observed ...
arxiv
Chromosome segregation in lymphocyte hybrids [PDF]
Hereditas, 2009 Chromosome segregation was studied in mouse/human and mouse/mouse T-lymphocyte hybrids, and in mouse/human, mouse/rabbit and mouse/rat B-lymphocyte hybrids. Chromosome loss was not random, it was moderate in mouse/mouse and mouse/rat lymphocyte hybrids, but extensive in mouse/human and mouse/rabbit lymphocyte hybrids.
Schroder, J +2 more
openaire +3 more sources
EccDNA‐Driven VPS41 Amplification Alleviates Genotoxic Stress via Lysosomal KAI1 Degradation
Advanced Science, EarlyView.Following ionizing radiation, eccDNA‐mediated VPS41 amplification slightly increases its expression but fails to prevent apoptosis. Introducing exogenous eccDNA or VPS41 enhances VPS41‐KAI1 interaction, promoting lysosomal degradation of KAI1. This process inhibits apoptotic signaling, enhancing cell survival and resistance to radiation‐induced damage.
Bin Shi +12 more
wiley +1 more source
Molecular & Cellular Oncology, 2017 Proper chromosome segregation relies on a functional centromere–kinetochore interface. We showed that chromatin containing CENtromere Protein A (CENP-A) is essential for centromere assembly, but dispensable for chromosome segregation in the presence of ...
S. Hoffmann, D. Fachinetti
doaj +1 more source