Nuclear eukaryotic RNA polymerases (RNAPs) transcribe a chromatin template in vivo. Since the basic unit of chromatin, the nucleosome, renders the DNA largely inaccessible, RNAPs have to overcome the nucleosomal barrier for efficient RNA synthesis. Gaining mechanistical insights in the transcription of chromatin templates will be essential to understand the complex process of eukaryotic gene expression. In this article we describe the use of defined in vitro transcription systems for comparative analysis of highly purified RNAPs I-III from S. cerevisiae (hereafter called yeast) transcribing in vitro reconstituted nucleosomal templates. We also provide a protocol to study promoter-dependent RNAP I transcription of purified native 35S ribosomal RNA (rRNA) gene chromatin.
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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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