The Saccharomyces cerevisiae genes PRP2, PRP16, and PRP22 encode pre-mRNA splicing factors that belong to the highly conserved "DEAH" family of putative RNA helicases. We previously identified two additional members of this family, JA1 and JA2. To investigate its biological function, we cloned the JA1 gene and generated alleles carrying mutations identical to those found in highly conserved regions of other members of the DEAH family. A ja1 allele carrying a mutation identical to that in the temperature-sensitive (ts) prp22-1 gene conferred ts phenotype when integrated into the genome of a wild-type strain by gene replacement. Northern analysis of RNA obtained from the ts strain shifted to a nonpermissive temperature revealed accumulation of unspliced pre-mRNAs and excised intron lariats. Furthermore, analysis of splicing complexes showed that intron lariats accumulated in spliceosomes. The results presented indicate that JA1 encodes a pre-mRNA processing factor (Prp) involved in disassembly of spliceosomes after the release of mature mRNA. We have therefore renamed this gene PRP43.
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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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