We have expressed the pore-forming subunits (Kir 6.1 and Kir 6.2) of the mammalian ATP-sensitive potassium channel in a potassium-transport deficient yeast strain (trk1 trk2). Functional expression of Kir 6.2 and Kir 6.1 can complement growth deficiency weakly and strongly respectively of the yeast strain on low-potassium medium. Mutations of Kir 6.2 that abolish ATP sensitivity (K185Q, I182Q) and enhance trafficking to the plasma membrane surface (Kir 6.2DeltaC36) lead to significantly better growth rescue. Growth rescue of Kir 6.1, Kir 6.2 and the above mutants can be inhibited by pharmacological agents (cesium ions, phentolamine and quinine) known to decrease channel activity by direct interaction with the pore forming subunit. Thus we have developed a system in yeast that can report both loss and gain of function mutations in these subunits and pharmacological interventions.
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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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