Transcriptional silencers in the yeast Saccharomyces induce position-specific, sequence-independent repression by promoting formation of a heterochromatin-like structure across sequences adjacent to them. We have examined the role of silencers in maintenance and inheritance of repression at the silent mating-type cassettes in yeast by monitoring the expression state of one of these cassettes following in vivo deletion of the adjacent silencer. Our experiments indicate that although silencer sequences are dispensable for the maintenance of repression in the absence of cell-cycle progression, silencers are required for the stable inheritance of a repressed state. That is, silenced loci from which the silencer is deleted most often become derepressed within one generation of losing the silencer. Thus, the heritability of a repressed state is not intrinsic to a silenced locus or to the chromatin encompassing it; rather, heritability of repression appears to be a property of the silencer itself.
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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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