Results 31 to 40 of about 81,802 (259)

FISH mapping and molecular organization of the major repetitive sequences of tomato [PDF]

open access: yes, 2008
This paper presents a bird's-eye view of the major repeats and chromatin types of tomato. Using fluorescence in-situ hybridization (FISH) with Cot-1, Cot-10 and Cot-100 DNA as probes we mapped repetitive sequences of different complexity on pachytene ...
Chang, S.B.   +10 more
core   +1 more source

Regulation of ectopic heterochromatin-mediated epigenetic diversification by the JmjC family protein Epe1.

open access: yesPLoS Genetics, 2019
H3K9 methylation (H3K9me) is a conserved marker of heterochromatin, a transcriptionally silent chromatin structure. Knowledge of the mechanisms for regulating heterochromatin distribution is limited.
Masato Sorida   +12 more
doaj   +1 more source

De Novo Polycomb Recruitment: Lessons from Latent Herpesviruses

open access: yesViruses, 2021
The Human Herpesviruses persist in the form of a latent infection in specialized cell types. During latency, the herpesvirus genomes associate with cellular histone proteins and the viral lytic genes assemble into transcriptionally repressive ...
Sara A. Dochnal   +2 more
doaj   +1 more source

Mediator directs co-transcriptional heterochromatin assembly by RNA interference-dependent and -independent pathways. [PDF]

open access: yesPLoS Genetics, 2013
Heterochromatin at the pericentromeric repeats in fission yeast is assembled and spread by an RNAi-dependent mechanism, which is coupled with the transcription of non-coding RNA from the repeats by RNA polymerase II. In addition, Rrp6, a component of the
Eriko Oya   +5 more
doaj   +1 more source

Sex Differences in Drosophila melanogaster Heterochromatin Are Regulated by Non-Sex Specific Factors. [PDF]

open access: yesPLoS ONE, 2015
The eukaryotic genome is assembled into distinct types of chromatin. Gene-rich euchromatin has active chromatin marks, while heterochromatin is gene-poor and enriched for silencing marks.
Manasi S Apte, Victoria H Meller
doaj   +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]

open access: yes, 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

Ccq1–Raf2 interaction mediates CLRC recruitment to establish heterochromatin at telomeres

open access: yesLife Science Alliance, 2021
This study unveils a role of Ccq1–Raf2 interaction in CLRC recruitment to establish heterochromatin at telomeres, providing a positive feedback mechanism between shelterin and CLRC for subtelomeric heterochromatin assembly.
Shaohua Shi   +6 more
doaj   +1 more source

Fission yeast CENP-B homologs nucleate centromeric heterochromatin by promoting heterochromatin-specific histone tail modifications [PDF]

open access: yes, 2002
Heterochromatin is a functionally important chromosomal component, especially at centromeres. In fission yeast, conserved heterochromatin-specific modifications of the histone H3 tail, involving deacetylation of Lys 9 and Lys 14 and subsequent ...
Nakagawa, H.   +15 more
core   +1 more source

A simulation model of heterochromatin formation at submolecular detail

open access: yesiScience, 2022
Summary: Heterochromatin is a physical state of the chromatin fiber that maintains gene repression during cell development. Although evidence exists on molecular mechanisms involved in heterochromatin formation, a detailed structural mechanism of ...
Michael R. Williams   +3 more
doaj   +1 more source

Heterochromatin: silence is golden [PDF]

open access: yesCurrent Biology, 2003
Epigenetically heritable heterochromatin domains control a variety of chromosomal functions. In addition to stable repression of large pericentric and telomeric domains, heterochromatin plays an essential role in the maintenance of genomic integrity through its role in sister chromatin cohesion and chromosome segregation.
Elgin, Sarah C.R., Grewal, Shiv I.S.
openaire   +2 more sources

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