Ribosomal protein L32 of Saccharomyces cerevisiae binds to and regulates the splicing and the translation of the transcript of its own gene. Selecting for mutants deficient in the regulation of splicing, we have identified a mutant form of L32 that no longer binds to the transcript of RPL32 and therefore does not regulate its splicing. The mutation is the deletion of an isoleucine residue from a highly conserved hydrophobic domain near the middle of L32. The mutant protein supports growth, at a reduced rate, and is found at normal levels in mature ribosomes. However, in cells homozygous for the mutant gene, the rate of processing of the ribosomal RNA component of the 60S ribosomal subunit is severely reduced, leading to an insufficiency of 60S subunits. L32 must be considered a remarkable protein. Composed of only 104 amino acids, it appears to interact with three distinct RNA molecules to influence three different elements of RNA processing and function in three different locations of the cell: the processing of pre-rRNA in the nucleolus, the splicing of the RPL32 transcript in the nucleus, and the translation of the spliced RPL32 mRNA in the cytoplasm.
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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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