The acidic transcriptional activation domain of the Herpes simplex virus protein VP16 has been shown to bind directly to both the TATA box-binding factor TBP and the general initiation factor TFIIB. Using DNase I footprinting assays, we have shown here that the VP16 activation domain qualitatively alters binding of Saccharomyces cerevisiae TBP to a TATA sequence in DNA. The effect of VP16 on promoter binding by TBP was reduced by mutations in VP16 known to reduce transactivation and could not be overcome by increasing the amount of TBP used in the footprinting assays. However, the association of yeast TFIIA with TBP on the promoter reversed the VP16-mediated effect and restored normal binding of TBP to the promoter. We suggest that VP16 induces a conformational change in TBP which alters its binding to promoter DNA, and that this effect of VP16 is suppressed by TFIIA.
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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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