prp6 and prp9 thermosensitive (ts) mutants are affected in pre-mRNA splicing and transport from the nucleus to the cytoplasm. PRP6 and PRP9 wild-type alleles have been sequenced. DNA sequence analysis reveals homologies in the 5' and 3' non-coding regions, suggesting a common regulation of gene expression. PRP6 and PRP9 genes encode a 899 amino acid and a 530 amino acid protein, respectively. The PRP6 protein has repeated motifs that evoke helix-loop-helix structures. Both PRP6 and PRP9 proteins have cysteine/histidine motifs loosely related to those found in zinc finger proteins. The substitution of some, but not all, of these residues by directed mutagenesis has a critical effect on the protein function. Homology searches reveal that two other proteins known to be involved in the nuclear splicing pathway--the yeast PRP11 and the human U1C proteins--contain similar sequences. The five cysteine/histidine motifs found in these four proteins display amino acid similarities in addition to the cysteine and histidine residues, indicating that they participate in biological structures or functions related to the splicing process. In addition, PRP6 and PRP9 exhibit leucine repeat motifs which may be implicated in protein interactions. The prp6 and prp9 ts mutations have been mapped and sequenced.
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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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