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Modulation of the active versus inactive forms of the Gα protein is critical for the signaling processes mediated by the heterotrimeric G‐protein complex. We have recently established that in Arabidopsis, the regulator of G‐protein signaling (RGS1) protein and a lipid‐hydrolyzing enzyme, phospholipase Dα1 (PLDα1), both act as GTPase‐activity accelerating proteins (GAPs) for the Gα protein to attenuate...
Heterotrimeric G‐proteins comprised of Gα, Gβ and Gγ subunits are important signal transducers in all eukaryotes. In plants, G‐proteins affect multiple biotic and abiotic stress responses, as well as many developmental processes, even though their repertoire is significantly limited compared with that in metazoan systems. One canonical and three extra‐large Gα, 1 Gβ and 3 Gγ proteins represent the...
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