Cited by 70Genomics and Chromatin DynamicsChromosomal and Genetic VariationsEpigenetics and DNA Methylation

The Methyltransferase Activity of Clr4Suv39h Triggers RNAi Independently of Histone H3K9 Methylation

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Gerace, Erica L., Halic, Mario, Moazed, Danesh·2010·Molecular Cell

Abstract

In fission yeast, the pericentromeric dg and dh repeats are transcribed and give rise to small interfering RNAs (siRNAs) by a mechanism that depends on the Clr4(suv39h) histone H3 lysine 9 (H3K9) methyltransferase. Here, we show that Clr4 activity promotes the assembly of a tripartite complex composed of the Clr4-containing CLRC complex and complexes involved in siRNA generation. However, unlike dh siRNAs, dg siRNAs accumulate to near wild-type levels in cells with H3K9 substitutions that cannot be methylated. Thus, Clr4 activity controls siRNA amplification from the different repeat regions by different mechanisms, H3K9 methylation dependent versus independent. Furthermore, artificial tethering of Rik1, a core subunit of the CLRC complex, to a euchromatic RNA mediates RNAi-dependent silencing that partially bypasses the requirement for other CLRC subunits. These findings establish Rik1 as a key link between CLRC and RNAi and reveal distinct centromeric siRNA amplification mechanisms that depend on the Clr4 methyltransferase activity.

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Crossref · 10.1016/j.molcel.2010.07.017

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Authors
Gerace, E. L., Halic, M., & Moazed, D.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Moazed, Danesh
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2010-08
Volume
39
Issue
3
Pages
360-372
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1999534739
Cited by
70
References
50
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 5 · 2018: 3 · 2017: 6 · 2016: 6 · 2015: 5 · 2014: 7 · 2013: 2 · 2012: 6
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health
  • National Institute of General Medical Sciences (R01GM061641, GM72805, R01GM072805)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
Clr4, Suv39h, histone H3 lysine 9 methylation, RNA interference, siRNA, pericentromeric repeats, Schizosaccharomyces pombe
MeSH terms
Centromere, Chromosomal Proteins, Non-Histone, Histones, Methylation, Methyltransferases, Multienzyme Complexes, Histone-Lysine N-Methyltransferase, RNA, Fungal, Schizosaccharomyces, Cell Cycle Proteins, Gene Silencing, Schizosaccharomyces pombe Proteins, RNA, Small Interfering

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