Figure 7.
Likely activation intermediate observed in the A2aR. (a) Overlay of A2aR ( yellow; PDB 3PWH) and β2AR inactive ( gray; PDB 2RH1) states. (b) A2aR bound to agonist (orange; PDB 2YDV) superimposed on the antagonist-bound structure (PDB 3PWH) and the active structure bound to the mini-Gsα (magenta; PDB 5G53). (c) Overlay of A2aR (PDB 5G53) and β2AR ( green; PDB 3SN6) active states. Abbreviations: A2aR, adenosine 2a receptor; β2AR, β2-adrenergic receptor; Gsα, heterotrimeric G protein α subunit; PDB, Protein Data Bank.