The splicing of group II and nuclear pre-mRNAs introns occurs via a similar splicing pathway and some of the RNA-RNA interactions involved in these splicing reactions show structural similarities. Recently, genetic analyses performed in a group II intron and the yeast nuclear actin gene suggested that non Watson-Crick interactions between intron boundaries are important for the second splicing step efficiency in both classes of introns. We here show that, in the yeast nuclear rp51A intron, a G to A mutation at the first position activates cryptic 3' splice sites with the sequences UAC/ or UAA/. Moreover, the natural 3' splice site could be reactivated by a G to C substitution of the last intron nucleotide. These results demonstrate that the interaction between the first and last intron nucleotides is a conserved feature of nuclear pre-mRNA splicing in yeast and is involved in the mechanism of 3' splice site selection.
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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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