We have undertaken a deletion analysis of the 3' external transcribed spacer (3' ETS) in the pre-rRNA of Saccharomyces cerevisiae. A stem loop structure immediately 3' to the 25 S rRNA region is necessary and sufficient for processing of the 3' ETS. This is believed to be by cotranscriptional cleavage by Rnt1p, the yeast homologue of RNase III. In addition, this stem-loop is required for cleavage of site A3 by RNase MRP and for processing at site B1L, in the 3' region of ITS1. Processing at an upstream site in ITS1, site A2, and at sites in the 5' external transcribed spacer are not affected, even by complete deletion of the 3' ETS. We conclude that processing in the 3' ETS and in ITS1 is coupled. This would constitute a quality control that prevents synthesis of the 5. 8 S rRNA and 5' end maturation of the 25 S rRNA in transcripts which are incomplete due to premature transcription termination.
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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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