The spp81/ded1 mutations were isolated as suppressors of a Saccharomyces cerevisiae pre-mRNA splicing mutation, prp8-1. The SPP81/DED1 gene encodes a putative ATP-dependent RNA helicase. While attempting to clone the wild-type SPP81/DED1 gene we isolated plasmids which were able to suppress the cold-sensitive growth defect of spp81 mutants. These plasmids encoded a gene (named DBP1) which mapped to chromosome XVI and not to the SPP81/DED1 locus on chromosome XV. The cloned gene suppressed the defect of spp81/ded1 mutants when present on both high and low copy-number plasmids but complemented spp81/ded1 null mutants only when present on high copy-number plasmids. In contrast to the SPP81/DED1 gene the DBP1 gene was not essential for cell viability. The nucleotide sequence of the DBP1 gene revealed that it also encoded a putative ATP-dependent RNA helicase which showed considerable similarity at the amino acid level to the SPP81/DED1 protein.
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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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