We have developed a combination of in vivo and in vitro methods which allows us to determine the effect of practically every structural change, deletions as well as point mutations, on various biological functions of a ribosomal protein (r-protein). We have used this approach to delineate the functional domains of r-protein L25 from Saccharomyces cerevisiae. By analysis of the intracellular distribution of fusion proteins carrying various portions of L25 linked to Escherichia coli beta-galactosidase we traced the nuclear localization signal(s) of L25 to the region encompassing the N-terminal 61 amino acids of the protein. On the other hand, using in vitro prepared fragments of L25 we located the domain responsible for its specific binding to 26S rRNA to the region between amino acids 61 and 135. In order to be able to analyze the effect of mutations in L25 on ribosome biogenesis and function in vivo we constructed a mutant yeast strain in which the chromosomal L25 gene is placed under control of the inducible yeast GAL promoter. Since this strain is unable to grow on glucose as a carbon source the L25 gene must be essential for cell viability. Growth on glucose can be restored by introduction of a wild-type L25 gene on a plasmid, demonstrating that under these conditions the cells are dependent upon an extrachromosomally supplied copy of the gene.
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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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