Snapshot of Activated G Proteins at the Membrane: The Gq-GRK2-G Complex
Tesmer, V.M., Kawano, T., Shankaranarayanan, A., Kozasa, T., Tesmer, J.J.G.(2005) Science 310: 1686-1690
- PubMed: 16339447 
- DOI: 10.1126/science.1118890
- Primary Citation of Related Structures:  
2BCJ - PubMed Abstract: 
G protein-coupled receptor kinase 2 (GRK2) plays a key role in the desensitization of G protein-coupled receptor signaling by phosphorylating activated heptahelical receptors and by sequestering heterotrimeric G proteins. We report the atomic structure of GRK2 in complex with Galphaq and Gbetagamma, in which the activated Galpha subunit of Gq is fully dissociated from Gbetagamma and dramatically reoriented from its position in the inactive Galphabetagamma heterotrimer ...