Disruption of an RNA-binding hinge region abolishes LHP1-mediated epigenetic repression
- Epigenetic maintenance of gene repression is essential for development. Polycomb complexes are central to this memory, but many aspects of the underlying mechanism remain unclear. LIKE HETEROCHROMATIN PROTEIN 1 (LHP1) binds Polycomb-deposited H3K27me3 and is required for repression of many Polycomb target genes in Arabidopsis. Here we show that LHP1 binds RNA in vitro through the intrinsically disordered hinge region. By independently perturbing the RNA-binding hinge region and H3K27me3 (trimethylation of histone H3 at Lys27) recognition, we found that both facilitate LHP1 localization and H3K27me3 maintenance. Disruption of the RNAbinding hinge region also prevented formation of subnuclear foci, structures potentially important for epigenetic repression.
| Verfasserangaben: | Scott BerryORCiD, Stefanie RosaGND, Martin HowardORCiD, Marc Buhler, Caroline Dean |
|---|---|
| DOI: | https://doi.org/10.1101/gad.305227.117 |
| ISSN: | 0890-9369 |
| ISSN: | 1549-5477 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/29212661 |
| Titel des übergeordneten Werks (Englisch): | Genes & Development |
| Verlag: | Cold Spring Harbor Laboratory Press |
| Verlagsort: | Cold Spring Harbor, NY |
| Publikationstyp: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Datum der Erstveröffentlichung: | 07.11.2017 |
| Erscheinungsjahr: | 2017 |
| Datum der Freischaltung: | 09.02.2021 |
| Freies Schlagwort / Tag: | Polycomb; RNA; chromatin; epigenetics; plant biology |
| Band: | 31 |
| Seitenanzahl: | 6 |
| Erste Seite: | 2115 |
| Letzte Seite: | 2120 |
| Fördernde Institution: | European Research Council Advanced Investigator Grant MEXTIM; UK Biotechnology and Biological Sciences Research Council Institute Strategic Programme [BB/J004588/1]; EMBO Short-Term Fellowship; John Innes Foundation |
| Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
| DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
| Peer Review: | Referiert |
| Publikationsweg: | Open Access / Gold Open-Access |
| Lizenz (Deutsch): |  CC-BY - Namensnennung 4.0 International |
