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The cationic region of Rhes mediates its interactions with specific Gβ subunits
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Hill, Claire, Goddard, Alan, Ladds, Graham and Davey, John (2009) The cationic region of Rhes mediates its interactions with specific Gβ subunits. Cellular Physiology and Biochemistry, Vol.23 (No.1-3). pp. 1-8. doi:10.1159/000204075
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Official URL: http://dx.doi.org/10.1159/000204075
Abstract
Ras homologue enriched in striatum (Rhes) is a small monomeric G protein which functions in a variety of cellular processes, including attenuation of G protein-coupled receptor (GPCR)signalling. There have been many studies into the effects of Rhes, but there is no molecular
information about how Rhes might bring about these effects. Rhes shares striking sequence homology to AGS1 (activator of G protein signalling 1) and we considered whether the two
proteins function in similar ways. AGS1 binds to the Gβ1 subunit of heterotrimeric G proteins and we have used yeast two-hybrid studies to show that Rhes binds selectively to Gβ1, Gβ2 and Gβ3 subunits. Binding to the Gβ subunits involves the cationic regions of AGS1 and Rhes, and we used Rhes-AGS1 chimeras to show that their different cationic regions determine the Gβ-specificity of the interactions. Possible implications of this interaction for the activity of Rhes are discussed.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | R Medicine > RB Pathology | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School | ||||
| Library of Congress Subject Headings (LCSH): | Cationic proteins | ||||
| Journal or Publication Title: | Cellular Physiology and Biochemistry | ||||
| Publisher: | Karger | ||||
| ISSN: | 1015-8987 | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Volume: | Vol.23 | ||||
| Number: | No.1-3 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | pp. 1-8 | ||||
| DOI: | 10.1159/000204075 | ||||
| Status: | Peer Reviewed | ||||
| Access rights to Published version: | Open Access | ||||
| Funder: | Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC), Coventry and Warwickshire Hospitals Trust (CWHT) |
Data sourced from Thomson Reuters' Web of Knowledge
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