Fig. 2. Cryo-EM structure of a β2V2R–Gs–βarr1 megaplex.
a, Composite cryo-EM density map of the megaplex reconstruction fitted into a transparent envelope of the megaplex consensus structure. b, Same as in a, but with protein stabilizers (Nb35, Nb32, and Fab30) and consensus reconstruction removed. Red dashed lines indicate the flexible C-terminal tail connecting βarr1 to the receptor.