Fig. 2: Cryo-EM structures of NTSR1–βArr1 complexes in SBI-553-bound or -unbound states.

a, b Cryo-EM density maps and ribbon representations of three NTSR1–βArr1–SBI-553 complexes (a) and the NTSR1–βArr1 complex (b). The interfaces of βArr1 coupling to NTSR1 in each complex are indicated in magnified views.