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.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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