Posttranslational modifications to histones have been studied extensively, but the requirement for the residues within the tails for different stages of transcription is less clear. Using RNR3 as a model, we found that the residues within the N terminus of H3 are predominantly required for steps after transcription initiation and chromatin remodeling. Specifically, deleting as few as 20 amino acids, or substituting glutamines for lysines in the tail, greatly impaired K36 methylation by Set2. The mutations to the tail described here preserve the residues predicted to fill the active site of Set2, and the deletion mimics the recently described cleavage of the H3 tail that occurs during gene activation. Importantly, maintaining the charge of the unmodified tail by arginine substitutions preserves Set2 function in vivo. The H3 tail is dispensable for Set2 recruitment to genes but is required for the catalytic activity of Set2 in vitro. We propose that Set2 activity is controlled by novel intratail interactions which can be influenced by modifications and changes to the structure of the H3 tail to control the dynamics and localization of methylation during elongation.
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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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