Results 31 to 40 of about 17,945 (147)

The histone chaperone Nrp1 is required for chromatin stability and nuclear division in Tetrahymena thermophila

open access: yesEpigenetics & Chromatin, 2021
Histone chaperones facilitate DNA replication and repair by promoting chromatin assembly, disassembly and histone exchange. Following histones synthesis and nucleosome assembly, the histones undergo posttranslational modification by different enzymes and
Yinjie Lian   +5 more
doaj   +1 more source

Histone chaperone Asf1 plays an essential role in maintaining genomic stability in fission yeast. [PDF]

open access: yesPLoS ONE, 2012
The histone H3-H4 chaperone Asf1 is involved in chromatin assembly (or disassembly), histone exchange, regulation of transcription, and chromatin silencing in several organisms. To investigate the essential functions of Asf1 in Schizosaccharomyces pombe,
Katsuhiro Tanae   +4 more
doaj   +1 more source

Epigenetically Mediated Ciliogenesis and Cell Cycle Regulation, and Their Translational Potential

open access: yesCells, 2021
Primary cilia biogenesis has been closely associated with cell cycle progression. Cilia assemble when cells exit the cell cycle and enter a quiescent stage at the post-mitosis phase, and disassemble before cells re-enter a new cell cycle.
Linda Xiaoyan Li, Xiaogang Li
doaj   +1 more source

RNA-dependent chromatin association of transcription elongation factors and Pol II CTD kinases

open access: yeseLife, 2017
For transcription through chromatin, RNA polymerase (Pol) II associates with elongation factors (EFs). Here we show that many EFs crosslink to RNA emerging from transcribing Pol II in the yeast Saccharomyces cerevisiae.
Sofia Battaglia   +5 more
doaj   +1 more source

DNA topoisomerase III localizes to centromeres and affects centromeric CENP-A levels in fission yeast. [PDF]

open access: yesPLoS Genetics, 2013
Centromeres are specialized chromatin regions marked by the presence of nucleosomes containing the centromere-specific histone H3 variant CENP-A, which is essential for chromosome segregation.
Ulrika Norman-Axelsson   +3 more
doaj   +1 more source

Hyperviscous Diabetic Bone Marrow Niche Impairs BMSCs Osteogenesis via TRPV2‐Mediated Cytoskeletal‐Nuclear Mechanotransduction

open access: yesAdvanced Science, EarlyView.
Diabetic bone marrow exhibits pathological ECM hyperviscosity that activates TRPV2‐mediated Ca2⁺ influx, leading to perinuclear F‐actin disassembly, nuclear deformation, and chromatin condensation. This cytoskeletal‐nuclear decoupling suppresses osteogenic differentiation of BMSCs.
Yao Wen   +8 more
wiley   +1 more source

Nap1L4a Cooperates with Scl/Klf1 to Recruit H2A.Z in Mediating Interactions Among Cis‐Regulatory Elements and Transcription Required for Primitive Erythropoiesis in Zebrafish

open access: yesAdvanced Science, EarlyView.
Nap1l4a is required in erythropoiesis and hypoxia responses via physical interaction with Klf1 and Scl to recruit the histone variant H2A.Z. This facilitates its associated cis‐regulatory element (CRE) remodeling and the consequent chromatin assembly, and activates the transcription of erythroid lineage‐specific genes.
JiaHao Shi   +10 more
wiley   +1 more source

Metaphase chromosome structure is dynamically maintained by condensin I-directed DNA (de)catenation

open access: yeseLife, 2017
Mitotic chromosome assembly remains a big mystery in biology. Condensin complexes are pivotal for chromosome architecture yet how they shape mitotic chromatin remains unknown.
Ewa Piskadlo   +2 more
doaj   +1 more source

The Modular Circuitry of Apicomplexan Cell Division Plasticity

open access: yesFrontiers in Cellular and Infection Microbiology, 2021
The close-knit group of apicomplexan parasites displays a wide variety of cell division modes, which differ between parasites as well as between different life stages within a single parasite species. The beginning and endpoint of the asexual replication
Marc-Jan Gubbels   +4 more
doaj   +1 more source

Autophagy Activators Normalize Aberrant Tau Proteostasis and Rescue Synapses in Human Familial Alzheimer's Disease iPSC‐Derived Cortical Organoids

open access: yesAdvanced Science, EarlyView.
A new cerebrocortical organoid model using isogenic hiPSCs with familial Alzheimer's mutations recapitulates key AD features, including amyloid‐beta and phospho‐Tau aggregation, neuronal hyperexcitability, and synapse loss. Single‐cell RNA‐seq reveals aberrant pathways in excitatory and inhibitory neurons.
Sergio R. Labra   +23 more
wiley   +1 more source

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