2k3y
From Proteopedia
Solution structure of EAF3 chromo barrel domain bound to histone h3 with a dimethyllysine analog H3K36ME2
Structural highlights
FunctionEAF3_YEAST Component of the NuA4 histone acetyltransferase complex which is involved in transcriptional activation of selected genes principally by acetylation of nucleosomal histone H4 and H2A. The NuA4 complex is also involved in DNA repair.[1] [2] [3] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedDeacetylation 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. Structural basis for the recognition of methylated histone H3K36 by the Eaf3 subunit of histone deacetylase complex Rpd3S.,Xu C, Cui G, Botuyan MV, Mer G Structure. 2008 Nov 12;16(11):1740-50. Epub 2008 Sep 25. PMID:18818090[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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