The expression of mutant 5 S rRNA genes in vivo is examined as a basis for further studies on the control, structure, and function of the ribosomal 5 S RNA. Specific single base substitutions (e.g. positions 98 or 99) or short insertions can result in substantial structural changes that can easily be detected by gel electrophoresis and permit the assay of mutant RNA synthesis and utilization. In addition, the use of high and low copy shuttle vectors as well as alternate growth conditions permits the adjustment of mutant RNA levels in vivo. Despite the high genomic copy number for the 5 S rRNA gene, under optimized conditions as much as 80% of the cellular 5 S RNA can be mutant, and RNA structure analyses indicate that some of these RNAs can readily be assembled into the ribosome structure resulting in an in vivo ribosome population which is also approximately 80% mutant. The results indicate that plasmid integrated 5 S rRNA genes are preferentially expressed and suggest that additional features of the chromosome structure regulate 5 S rRNA gene expression in vivo.
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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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