Monoclonal antibodies were raised in mouse against native RNA polymerase A from Saccharomyces cerevisiae. After screening with the spot-immunodetection technique, 14 hybridomas were selected and the antibodies produced in mice. Their specificity, analyzed by blot-immunodetection, was found to be markedly biased towards a few RNA polymerase subunits: A135 , A49 , A43 , and A14.5. A different monoclonal antibody directed against the largest subunit, A190 , was obtained by immunizing a mouse with RNA polymerase A dissociated into its subunits with SDS. Two antibodies, which probably recognized the same antigenic determinant on subunit A135 , inhibited in vitro RNA synthesis. Inhibition was prevented by preincubation of the enzyme with DNA, suggesting a role for the A135 subunit in template binding. The antibody directed against A14.5 interacted with the A14.5 kd subunit present in all three forms of the yeast nuclear RNA polymerases but did not interfere with RNA polymerase activity. These antibody probes will be useful to study subunit function in reconstituted transcription systems.
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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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