The SLP1 gene, which is involved in the expression of vacuolar functions in the yeast Saccharomyces cerevisiae (K. Kitamoto, K. Yoshizawa, Y. Ohsumi, and Y. Anraku, J. Bacteriol. 170:2687-2691, 1988), has been cloned from a yeast genomic library by complementation of the slp1-1 mutation. The isolated plasmid has a 7.8-kilobase BamHI-BamHI fragment that is sufficient to complement several characteristic phenotypes of the slp1-1 mutation. The fragment was integrated at the chromosomal SLP1 locus, indicating that it contains an authentic SLP1 gene. By DNA sequencing of the SLP1 gene, an open reading frame of 2,073 base pairs coding for a polypeptide of 691 amino acid residues (Mr, 79,270) was found. Gene disruption of the chromosomal SLP1 did not cause a lethal event. Vacuolar proteins in the delta slp1 mutant are not processed to vacuolar forms but remain in Golgi-modified forms. Carboxypeptidase Y in the delta slp1 mutant is localized mainly to the outsides of the cells. delta slp1 mutant cells have no prominent vacuolar structures but contain numerous vesicles in the cytoplasm, as seen by electron microscopy. Genetic and molecular biological analyses revealed that SLP1 is identical to VPS33, which is required for vacuolar protein sorting as reported by Robinson et al. (J. S. Robinson, D. J. Klionsky, L. M. Banta, and S. D. Emr, Mol. Cell. Biol. 8:4936-4948, 1988). These results indicate that the SLP1 (VPS33) gene is involved in the sorting of vacuolar proteins from the Golgi apparatus and their targeting to the vacuole and that it is required for the morphogenesis of vacuoles and subsequent expression of vacuolar functions.
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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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