Structural Basis for the Recognition of Methylated Histone H3K36 by the Eaf3 Subunit of Histone Deacetylase Complex Rpd3S

Chao Xu, Gaofeng Cui, Maria Victoria Botuyan, Georges Mer

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

Deacetylation of nucleosomes by the Rpd3S histone deacetylase along the path of transcribing RNA polymerase II regulates access to DNA, contributing to faithful gene transcription. The association of Rpd3S with chromatin requires its Eaf3 subunit, which binds histone H3 methylated at lysine 36 (H3K36). Eaf3 is also part of NuA4 acetyltransferase that recognizes methylated H3K4. Here we show that Eaf3 in Saccharomyces cerevisiae contains a chromo barrel-related domain that binds methylated peptides, including H3K36 and H3K4, with low specificity and millimolar-range affinity. Nuclear magnetic resonance structure determination of Eaf3 bound to methylated H3K36 was accomplished by engineering a linked Eaf3-H3K36 molecule with a chemically incorporated methyllysine analog. Our study uncovers the molecular details of Eaf3-methylated H3K36 complex formation, and suggests that, in the cell, Eaf3 can only function within a framework of combinatorial interactions. This work also provides a general method for structure determination of low-affinity protein complexes implicated in methyllysine recognition.

Original languageEnglish (US)
Pages (from-to)1740-1750
Number of pages11
JournalStructure
Volume16
Issue number11
DOIs
StatePublished - Nov 12 2008

Keywords

  • DNA

ASJC Scopus subject areas

  • Structural Biology
  • Molecular Biology

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