The yeast HIS3 TR and TC TATA elements support basal transcription, but only TR can respond to transcriptional activators. Four genes, NOT1(CDC39), NOT2(CDC36), NOT3, NOT4, act as general negative regulators and preferentially affect TC-dependent transcription. Allele-specific suppression, a two-hybrid interaction, and biochemical confractionation suggest that NOT1 and NOT2 are nuclear proteins associated in a discrete, 500-kD complex. NOT4 interacts with NOT1 and NOT3 in the two-hybrid assay, and overexpression of NOT3 or NOT4 suppresses not1 and not2 mutations. Repression by the NOT proteins is not attributable to inhibition of transcriptional activators, does not involve the CYC8/TUP1 negative regulatory complex, and is distinct from repression by nucleosomes or by the SPT4, 5, 6 proteins that affect chromatin structure. We propose that the NOT protein inhibit the basic RNA polymerase II transcription machinery, possibly by affecting TFIID function.
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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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