Phj. Nederkoorn et al., TRIMERIC G-ALPHA-BETA-GAMMA PROTEIN COUPLING TO A 3D MODEL OF G-PROTEIN-COUPLED RECEPTORS CONFIRMING A NEW MOLECULAR MECHANISM FOR ACTIVATION, Receptors & channels, 5(2), 1997, pp. 91
The present-day model for G protein activation and the associated theo
ry on how a G protein-coupled receptor may activate the G protein are
summarized. Experimental data are outlined which seem not to be in acc
ordance with this present-day model. An alternative molecular mechanis
m for ternary complex activation is presented together with a three-di
mensional model for a receptor coupled to the appropriate trimeric G p
rotein. This 3D structure confirms our new molecular mechanism of acti
vation.