title: Heterotrimeric G protein signalling in the plant kingdom.
abstract: In animals, heterotrimeric G proteins, comprising α-, β-and γ-subunits, perceive extracellular stimuli through cell surface receptors, and transmit signals to ion channels, enzymes and other effector proteins to affect numerous cellular behaviours. In plants, G proteins have structural similarities to the corresponding molecules in animals but transmit signals by atypical mechanisms and effector proteins to control growth, cell proliferation, defence, stomate movements, channel regulation, sugar sensing and some hormonal responses. In this review, we summarize the current knowledge on the molecular regulation of plant G proteins, their effectors and the physiological functions studied mainly in two model organisms: Arabidopsis thaliana and rice (Oryza sativa). We also look at recent progress on structural analyses, systems biology and evolutionary studies.
authors.affiliation: Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Urano
authors.forename: Jin-Gui
authors.initials: JG
authors.lastname: Chen
authors.forename: José Ramón
authors.initials: JR
authors.lastname: Botella
authors.forename: Alan M
authors.initials: AM
authors.lastname: Jones
mesh_terms: D000818:Animals; D004705:Endocytosis; D020962:Heterotrimeric GTP-Binding Proteins / Q000737:chemistry / Q000378:metabolism*; D007473:Ion Channels / Q000378:metabolism; D063245:Plant Development; D010940:Plant Proteins / Q000737:chemistry / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D021122:Protein Subunits / Q000737:chemistry / Q000378:metabolism; D043562:Receptors, G-Protein-Coupled / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D007473:Ion Channels; D010940:Plant Proteins; D021122:Protein Subunits; D043562:Receptors, G-Protein-Coupled; D020962:Heterotrimeric GTP-Binding Proteins
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