Histone modifications have been implicated in both DNA repair and checkpoint-mediated responses to DNA damage. Recently much attention has focused on the acetylation of H3 K56. Indeed, this modification is cell cycle-regulated, maintained upon replicative damage in a checkpoint-dependent manner, and is essential for surviving DNA damage. We and others have discovered that two members of the HDAC Sirtuin family, Hst3 and Hst4, negatively regulate H3 K56 acetylation in budding yeast. Additionally, we have shown that these two HDACs are targeted for repression by the DNA damage checkpoint, which is vital for DNA damage tolerance. Discovery that two HDACs are negative regulators of the cellular response to DNA damage and that they target the acetylation of H3 K56 reveals a complex relationship between histone modifications, HDACs, and the DNA damage response. Here, we discuss the recent reports of the regulation of H3 K56-Ac by Hst3 and Hst4 and put forth the critical questions that remain for understanding the intimate, though poorly characterized, connection between chromatin states and genomic maintenance.
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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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