Recommend Plant Signaling & Behavior (PS&B) to your librarian for 2008. Download form here.
Sign up for Table of Contents Alerts!
PS&B is the official journal of the Society for Plant Neurobiology. Full membership ($60 annually) and student membership ($30 annually) include online access to the journal. Click here to join.
Email this page
Print this page
Mini Review
Heterotrimeric G-protein signaling in Arabidopsis: Puzzling G-protein-coupled receptor
Jin-Gui Chen
volume 3 | issue 12
december 2008Subscribe to this journal for $79/year
Seven transmembrane G-protein-coupled receptors (GPCRs) are commonly used by eukaryotes to sense extracellular signals to switch on cellular responses through the activation of cognate heterotrimeric G-proteins. In Arabidopsis thaliana, GCR2 has been proposed as a GPCR for the plant hormone abscisic acid. On the other hand, biochemical analysis demonstrates that the sole Arabidopsis heterotrimeric G-protein α subunit, GPA1, is in the activated state (GTP-bound) by default, suggesting that the heterotrimeric G-proteins may act without any GPCRs.
Authors
Jin-Gui Chen
University of British Columbia