title: Heterotrimeric G protein-coupled signaling in plants.
abstract: Investigators studying G protein-coupled signaling--often called the best-understood pathway in the world owing to intense research in medical fields--have adopted plants as a new model to explore the plasticity and evolution of G signaling. Much research on plant G signaling has not disappointed. Although plant cells have most of the core elements found in animal G signaling, differences in network architecture and intrinsic properties of plant G protein elements make G signaling in plant cells distinct from the animal paradigm. In contrast to animal G proteins, plant G proteins are self-activating, and therefore regulation of G activation in plants occurs at the deactivation step. The self-activating property also means that plant G proteins do not need and therefore do not have typical animal G protein-coupled receptors. Targets of activated plant G proteins, also known as effectors, are unlike effectors in animal cells. The simpler repertoire of G signal elements in Arabidopsis makes G signaling easier to manipulate in a multicellular context.
authors: Department of Biology and.
authors: Daisuke
authors: D
authors: Urano
authors: Alan M
authors: AM
authors: Jones
mesh_terms: D017360:Arabidopsis / Q000378:metabolism; D020962:Heterotrimeric GTP-Binding Proteins / Q000378:metabolism*; D008958:Models, Molecular; D010940:Plant Proteins / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D017433:Protein Structure, Secondary; D015398:Signal Transduction
chemical_list: D010940:Plant Proteins; D020962:Heterotrimeric GTP-Binding Proteins