The G-protein gamma-subunit-like (GGL) domain present within a subfamily of RGS proteins binds specifically to Gbeta5. This interaction and resulting biological effect impacts the standard model of heterotrimeric G-protein signaling. It has been hypothesized that the RGS/Gbeta5 may potentially substitute for Gbetagamma in the heterotrimeric complex. Saccharomyces cerevisiae pheromone responsive mating signaling pathway is primarily driven by Gbetagamma. We evaluated GGL containing RGS9 and RGS7 for functional complementation in a RGS (sst2Delta) knockout yeast strain. The potential of Gbeta5 to augment the function of these RGS proteins was also evaluated. While Gbeta5 had no effect on RGS7, coexpression of Gbeta5 with RGS9 enhanced cell cycle arrest, suggesting that under certain conditions, RGS9 and Gbeta5 may possibly function as betagamma dimer. Furthermore, we demonstrate that Gbeta5 can complement a ste4Delta, the yeast beta-subunit, thus providing the first evidence of functional complementation of a mammalian Gbeta.
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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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