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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Curr Top Behav Neurosci. 2018;36:45–73. doi: 10.1007/7854_2017_478

Fig. 3.

Fig. 3

The ternary complex model. According to this model, the receptor in its inactive state (R) undergoes a conformational transition, which leads to the formation of an active state (R*). This active state in turn interacts with heterotrimeric G proteins (G). Note that according to this model, the relative degree of activation of each effector pathway by the tested agonists must be the same