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Abstract

Abstract

Heterotrimeric G-protein complexes couple extracellular signals via cell surface receptors to downstream enzymes called effectors. Heterotrimeric G-protein complexes, together with their cognate receptors and effectors, operate at the apex of signal transduction. In plants, the number of G-protein complex components is dramatically less than in other multicellular eukaryotes. An understanding of how multiple signals propagate transduction through the G-protein node can be found in the unique structural and kinetic properties of the plant heterotrimeric G-protein complex. This review addresses these unique features and speculates on why the repertoire of G-protein signaling elements is dramatically simpler than that in all other multicellular eukaryotes.

Keyword(s): AtRGS1GPCRPhosducinPirinPLDTHF1
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/content/journals/10.1146/annurev.arplant.58.032806.103827
2007-06-02
2024-06-15
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Supplementary Data

  • Article Type: Review Article
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