Protein localization is tightly linked with function, such that the subcellular distribution of a protein serves as an important control point regulating activity. Exploiting this regulatory mechanism, we present here a general approach by which protein location, and hence function, may be controlled on demand in the budding yeast. In this system a small molecule, rapamycin, is used to temporarily recruit a strong cellular address signal to the target protein, placing subcellular localization under control of the selective chemical stimulus. The kinetics of this system are rapid: rapamycin-directed nucleo-cytoplasmic transport is evident 10-12 min post-treatment and the process is reversible upon removal of rapamycin. Accordingly, we envision this platform as a promising approach for the systematic construction of conditional loss-of-function mutants. As proof of principle, we used this system to direct nuclear export of the essential heat shock transcription factor Hsf1p, thereby mimicking the cell-cycle arrest phenotype of an hsf1 temperature-sensitive mutant. Our drug-induced localization platform also provides a method by which protein localization can be uncoupled from endogenous cell signalling events, addressing the necessity or sufficiency of a given localization shift for a particular cell process. To illustrate, we directed the nuclear import of the calcineurin-dependent transcription factor Crz1p in the absence of native stimuli; this analysis directly substantiates that nuclear translocation of this protein is insufficient for its transcriptional activity. In total, this technology represents a powerful method for the generation of conditional alleles and directed mislocalization studies in yeast, with potential applicability on a genome-wide scale.
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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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Evidence ID | Analyze ID | File | Description |
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