Two-dimensional crystals of yeast RNA polymerase A (I) were obtained by interaction with positively charged lipid layers. The analysis of single molecular images of lipid-bound RNA polymerases showed that the enzyme was preferentially oriented by the lipid phase, which probably facilitated crystallization. Electron micrographs of the crystals revealed a rectangular unit cell 25.8 nm by 45.6 nm in size containing four RNA polymerase dimers related by P22(1)2(1) symmetry. The projection map showed, at about 2.5 nm resolution, two different views of the enzyme characterized by two bent arms, which appeared to cross at one end. These arms are likely to contain the A190 and A135 subunits and delimit a 3 to 4 nm wide groove. Additional structural features were observed and compared to the Escherichia coli enzyme.
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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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