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Identification of Gnr1p, a negative regulator of Got signalling in Schizosaccharomyces pombe, and its complementation by human G beta subunits
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Goddard, Alan, Ladds, Graham, Forfar, Rachel and Davey, John (2006) Identification of Gnr1p, a negative regulator of Got signalling in Schizosaccharomyces pombe, and its complementation by human G beta subunits. FUNGAL GENETICS AND BIOLOGY, 43 (12). pp. 840-851. doi:10.1016/j.fgb.2006.06.005 ISSN 1087-1845.
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Official URL: http://dx.doi.org/10.1016/j.fgb.2006.06.005
Abstract
G protein-coupled receptors (GPCRs) are involved in the response of eukaryotic cells to a wide variety of stimuli, traditionally mediating their effects through heterotrimeric G proteins comprised of G alpha, G beta and G gamma subunits. The fission yeast Schizosaccharomyces pombe is an established tool for GPCR research, possessing two Got-dependent signalling cascades. A complete G alpha beta gamma complex has been characterised for the glucose-sensing pathway, but only the G alpha subunit, Gpa1p, has been identified in the pheromone-response pathway. Here, we report the use of the yeast two-hybrid system to identify a novel protein, Gnr1p, which interacts with Gpa1p. Gnr1p is predicted to contain seven WD repeats and to adopt a structure similar to typical G beta subunits. Disruption and overexpression studies reveal that Gnr1p negatively regulates the pheromone-response pathway but is not required for signalling. Human GP subunits complement the loss of Gnr1p, functioning as negative regulators of Go, signalling in fission yeast. (c) 2006 Elsevier Inc. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QH Natural history > QH426 Genetics Q Science > QK Botany |
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| Journal or Publication Title: | FUNGAL GENETICS AND BIOLOGY | ||||
| Publisher: | ACADEMIC PRESS INC ELSEVIER SCIENCE | ||||
| ISSN: | 1087-1845 | ||||
| Official Date: | December 2006 | ||||
| Dates: |
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| Volume: | 43 | ||||
| Number: | 12 | ||||
| Number of Pages: | 12 | ||||
| Page Range: | pp. 840-851 | ||||
| DOI: | 10.1016/j.fgb.2006.06.005 | ||||
| Publication Status: | Published |
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