Transcriptional activation of eukaryotic genes often requires the function of histone acetyltransferases (HATs), which is expected to result in the hyperacetylation of histones within promoter nucleosomes. In this study we show that, in Saccharomyces cerevisiae, the steady-state levels of Gcn5-dependent histone acetylation within a number of transcriptionally active promoters are inversely related to the rate of transcription. High acetylation levels were measured only when transcription was attenuated either by TATA element mutations or in a strain carrying a temperature-sensitive protein component of RNA polymerase II. In addition, we show that in one case the low levels of histone acetylation depend on the function of the Rpd3 histone deacetylase. These results point to the existence of an unexpected interplay of two opposing histone-modifying activities which operate on promoter nucleosomes following the initiation of RNA synthesis. Such interplay could ensure rapid turnover of chromatin acetylation states in continuously reprogrammed transcriptional systems.
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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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