Yeast RNA polymerases A and C share an approximately equal to 40 kd subunit. We have identified, sequenced, and mutagenized in vitro the AC40 subunit gene. The RPC40 gene is unique in the yeast genome and is required for cell viability. This gene contains an open reading frame encoding a 37.6 kd protein having no significant homology with bacterial RNA polymerase subunits. The promoter region contains a 19 bp sequence also present in the largest subunit of RNA polymerase C. It also contains a well-conserved RPG box, a sequence found in the promoter region of many genes encoding the translational apparatus. A novel, plasmid-shuffling method was developed to isolate a large number of RPC40 ts mutants. One of these, ts4, was shown to be defective in the synthesis of RNA polymerases A and C at the restrictive temperature. In contrast, RNA polymerase B was made normally.
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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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