Results 71 to 80 of about 102,384 (311)
Proceedings of the National Academy of Sciences of the United States of America, 2021 Significance In multicellular organisms, a single genome gives rise to a multitude of cell types by enforcing appropriate gene expression patterns. Epigenetic mechanisms involving modification of histones, including tri-methylation of histone H3 lysine 9
Amber R. Cutter DiPiazza +5 more
semanticscholar +1 more source
How HP1 Post-Translational Modifications Regulate Heterochromatin Formation and Maintenance
Cells, 2020 Heterochromatin Protein 1 (HP1) is a highly conserved protein that has been used as a classic marker for heterochromatin. HP1 binds to di- and tri-methylated histone H3K9 and regulates heterochromatin formation, functions and structure.
Raquel Sales-Gil, Paola Vagnarelli
doaj +1 more source
Molecules and Cells, 2020 Interphase chromatin is hierarchically organized into higher-order architectures that are essential for gene functions, yet the biomolecules that regulate these 3D architectures remain poorly understood.
Xiangru Huo +12 more
semanticscholar +1 more source
Kruppel-associated Box (KRAB)-associated co-repressor (KAP-1) Ser-473 phosphorylation regulates heterochromatin protein 1β (HP1-β) mobilization and DNA repair in heterochromatin [PDF]
, 2012 The DNA damage response encompasses a complex series of signaling pathways that function to regulate and facilitate the repair of damaged DNA. Recent studies have shown that the repair of transcriptionally inactive chromatin, named heterochromatin, is ...
Savage, Kienan I +16 more
core +1 more source
Heterochromatin as an Important Driver of Genome Organization
Frontiers in Cell and Developmental Biology, 2020 Heterochromatin is a constituent of eukaryotic genomes with functions spanning from gene expression silencing to constraining DNA replication and repair.
Andrés Penagos-Puig +1 more
doaj +1 more source
Imaging the Response to DNA Damage in Heterochromatin Domains
Frontiers in Cell and Developmental Biology, 2022 The eukaryotic genome is assembled in a nucleoprotein complex called chromatin, whose organization markedly influences the repair of DNA lesions. For instance, compact chromatin states, broadly categorized as heterochromatin, present a challenging ...
Audrey Chansard +3 more
doaj +1 more source
Role of H3K9me3 Heterochromatin in Cell Identity Establishment and Maintenance
Current Opinion in Genetics and Development, 2019 Compacted, transcriptionally repressed chromatin, referred to as heterochromatin, represents a major fraction of the higher eukaryotic genome and exerts pivotal functions of silencing repetitive elements, maintenance of genome stability, and control of ...
Dario Nicetto, K. Zaret
semanticscholar +1 more source
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
The composition and organization of Drosophila heterochromatin are heterogeneous and dynamic
eLife, 2016 Heterochromatin is enriched for specific epigenetic factors including Heterochromatin Protein 1a (HP1a), and is essential for many organismal functions.
Joel M Swenson +4 more
doaj +1 more source
Cell Reports, 2021 Summary: Heterochromatin formation requires three distinct steps: nucleation, self-propagation (spreading) along the chromosome, and faithful maintenance after each replication cycle.
Magdalena Murawska +7 more
doaj +1 more source