A genetic approach was used to isolate and characterize Saccharomyces cerevisiae genes affecting tRNA processing. Three mutants were isolated which were able to process and utilize splicing-deficient transcripts from inactivated Schizosaccharomyces pombe suppressor tRNA genes. Extragenic recovery of suppressibility was verified by the suppression of nonsense mutations in LEU2, HIS4, and ADE1. One mutant, SPL1-1, was chosen for detailed analysis on the basis of its increased synthesis of mature suppressor tRNA over wild-type cell levels as determined by Northern (RNA) analysis. This mutant exhibited strong suppression exclusively with the defective tRNA gene used in the mutant selection. Genetic analysis revealed that a single, dominant, haplo-lethal mutation was responsible for the suppression phenotype. The mutation mapped on chromosome III to an essential 1.5-kb open reading frame (L. S. Symington and T. D. Petes, Mol. Cell. Biol. 8:595-604, 1988), recently named NFS1 (S. G. Oliver et al., Nature [London] 357:38-46, 1992), located adjacent (centromere proximal) to LEU2.
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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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