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Open Access Green as soon as Postprint is submitted to ZB.
Df31 protein and snoRNAs maintain accessible higher-order structures of chromatin.
Mol. Cell 48, 434-444 (2012)
Packaging of DNA into nucleosomes and the formation of higher-order chromatin structures determine DNA accessibility and activity of genome domains. We identified an RNA-dependent mechanism maintaining the open chromatin structure within euchromatic regions in Drosophila cells. The mechanism of reversible chromatin opening, reconstituted in vitro, depends on the Drosophila decondensation factor 31 (Df31) that specifically binds to RNA and localizes to euchromatic regions. Df31 is capable to tether a heterogeneous pool of short, single-stranded RNAs to chromatin. This class of chromatin-associated RNA (caRNA) is stably linked to chromatin and is largely composed of snoRNAs, which are preferentially bound by Df31. We suggest that the Df31-mediated linkage of snoRNAs and chromatin, forms a RNA-chromatin network resulting in the establishment of open chromatin domains. Analysis of caRNAs in human cells also reveals a strong enrichment of snoRNAs, implying a conserved role for these molecules in higher-order structures of chromatin.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Histone Modification ; Box C/d ; Rna ; Component ; Dna ; Transcription ; Binding ; World
ISSN (print) / ISBN
1097-2765
e-ISSN
1097-4164
Journal
Molecular Cell
Quellenangaben
Volume: 48,
Issue: 3,
Pages: 434-444
Publisher
Elsevier
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Molecular Immunology (IMI)