Potassium uptake defective Saccharomyces cerevisiae strains (Deltatrk1,2 and Deltatrk1,2 Deltatok1) were used for the phenotypic analysis of the mouse inward rectifying Kir2.1 channel by growth analysis. Functional expression of both, multi-copy plasmid and chromosomally expressed GFP-mKir2.1 fusion constructs complemented the potassium uptake deficient phenotype in a pHout dependent manner. Upon application of Hygromycin B to chromosomally mKir2.1 expressing cells, significantly lower toxin sensitivity (EC50 15.4 microM) compared to Deltatrk1,2 Deltatok1 cells (EC50 2.6 microM) was observed. Growth determination of mKir2.1 expressing strains upon application of Ag+, Cs+ and Ba2+ as known blockers of mKir2.1 channels revealed significantly decreased channel function. Cells with mKir2.1 were about double sensitive to AgNO3, 350-fold more sensitive to CsCl and 1500-fold more sensitive to BaCl2 in comparison to the respective controls indicating functional expression and correct pharmacology.
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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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