The extensively studied yeast GAL1-10 gene cluster is tightly regulated by environmental sugar availability. Unexpectedly, under repressive conditions the 3' region of the GAL10 coding sequence is trimethylated by Set1 on histone H3 K4, normally characteristic of 5' regions of actively transcribed genes. This reflects transcription of a long noncoding RNA (GAL10-ncRNA) that is reciprocal to GAL1 and GAL10 mRNAs and driven by the DNA-binding protein Reb1. Point mutations in predicted Reb1-binding sites abolished Reb1 binding and ncRNA synthesis. The GAL10-ncRNA is transcribed approximately once every 50 min and targeted for degradation by the TRAMP and exosome complexes, resulting in low steady-state levels (approximately one molecule per 14 cells). GAL10-ncRNA transcription recruits the methyltransferase Set2 and histone deacetylation activities in cis, leading to stable changes in chromatin structure. These chromatin modifications act principally through the Rpd3S complex to aid glucose repression of GAL1-10 at physiologically relevant sugar concentrations.
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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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