The Trypanosoma brucei homologue of the RNA polymerase I (RNA Pol I) subunit Rpa12p of Saccharomyces cerevisiae was cloned and characterized. This protein did not appear to be essential for growth in either bloodstream or procyclic forms of the parasite. Trypanosomes expressing a C-terminal tagged version of TbRPA12 were generated in order to purify RNA Pol I from both developmental stages. Tandem affinity purification (TAP) revealed a number of proteins associating with TbRPA12, some of which appeared to be stage-specific. Mass spectrometry allowed the identification of four subunits in addition to TbRPA12, namely TbRPA1, TbRPA2, TbRPC40 and one isoform of TbRPB5 (Tb1RPB5), as well as an unknown 30kDa protein and histones H2A and H3. Whereas these studies demonstrated that TbRPA1 was phosphorylated, no evidence for phosphorylation of TbRPA2 was found.
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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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