Figure 1From: Agonist signalling properties of radiotracers used for imaging of dopamine D2/3 receptorsCanonical (G-protein-dependent) and non-canonical (G-protein-independent) signalling of D2R. Beta-arrestin-2 inactivates Akt resulting in increased activation of GSK3. D2R, dopamine D2 receptor; AC, adenylyl cyclase; cAMP, cyclic adenosine mono phosphate; PKA, protein kinase A; Akt, protein kinase B; GSK3, glycogen synthase kinase 3.Back to article page