Btn2p is a novel coiled coil cytosolic protein in Saccharomyces cerevisiae. We report that Btn2p interacts with Yif1p, a component of a protein complex at the Golgi that functions in ER to Golgi transport. Deletion of Btn2p, btn2-delta, results in mis-localiztion of Yif1p to the vacuole. Therefore, Btn2p may have an apparent role in intracellular trafficking of proteins. Btn2p was originally identified as being up-regulated in a btn1-delta strain, which exhibits dysregulation of vacuolar pH, and this up-regulation of Btn2p was presumed to contribute to maintaining a stable vacuolar pH [Pearce et al. Nat. Genet. 22 (1999) 55]. We propose that up-regulation of Btn2p in btn1-delta is an indicator of altered trafficking within the cell, and as btn1-delta serves as a model for the lysosomal storage disorder Batten disease, that altered intracellular trafficking may contribute to some of the cellular pathological hallmarks of this disease.
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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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