The Saccharomyces cerevisiae protein Rrp43p co-purifies with four other 3'-->5' exoribonucleases in a complex that has been termed the exosome. Rrp43p itself is similar to prokaryotic RNase PH. Individual exosome subunits have been implicated in the 3' maturation of the 5.8S rRNA found in 60S ribosomes and the 3' degradation of mRNAs. However, instead of being deficient in 60S ribosomes, Rrp43p-depleted cells were deficient in 40S ribosomes. Pulse-chase and steady-state northern analyses of pre-RNA and rRNA levels revealed a significant delay in the synthesis of both 25S and 18S rRNAs, accompanied by the stable accumulation of 35S and 27S pre-rRNAs and the under-accumulation of 20S pre-rRNA. In addition, Rrp43p-depleted cells accumulated a 23S aberrant pre-rRNA and a fragment excised from the 5' ETS. Therefore, in addition to the maturation of 5.8S rRNA, Rrp43p is required for the maturation 18S and 25S rRNA.
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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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