Specific binding of purified proteins from the large ribosomal subunits of Saccharomyces cerevisiae to 5.8 S rRNA was examined by three different methods: nitrocellulose membrane filtration, sucrose density gradient centrifugation, and RNA-Sepharose column chromatography. RNA-protein complex formation was proportional to the amount of proteins added to the reaction mixture. The binding of proteins to the RNA could be saturated. Such RNA-protein complexes were isolated on sucrose density gradients. Protein species present in these complexes were isolated, iodinated, and analyzed by two-dimensional polyacrylamide gel electrophoresis. Eleven proteins, L13, L14, L17, L19, L21, L24, L25, L29, L30, L33, and L39, were identified. By comparison, only six proteins interacted with the 5.8 S rRNA-Sepharose under similar ionic conditions. They were proteins L14, L21, L24, L27, L29, and L30. To better characterize these binding proteins, the interaction of individual proteins with 5.8 S rRNA was studied by nitrocellulose membrane filtration. Proteins L14, L19, L21, L29, L33, and L39 were observed to bind individually with 5.8 S rRNA. Binding of each protein to the RNA could be saturated. The apparent association constants (K'a), measured at 4 degrees C and in 30 mM Tris-HCl, pH 7.4, 20 mM MgCl2, 330 mM KCl, and 6 mM beta-mercaptoethanol, ranged from 1.05 to 3.70 X 10(6) M-1.
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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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