The three-dimensional structure of wild-type yeast RNA polymerase II has been determined at a nominal resolution of 24 A. A difference map between this structure and that of the polymerase lacking subunits Rpb4 and Rpb7 showed these two subunits forming part of the floor of the DNA-binding (active center) cleft, and revealed a slight inward movement of the protein domain surrounding the cleft. Surface plasmon resonance measurements showed that Rpb4 and Rpb7 stabilize a minimal pre-initiation complex containing promoter DNA, TATA box-binding protein (TBP), transcription factor TFIIB and the polymerase. These findings suggest that Rpb4 and Rpb7 play a role in coupling the entry of DNA into the active center cleft to closure of the cleft. Such a role can explain why these subunits are necessary for promoter-specific transcription in vitro and for a normal stress response in vivo.
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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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