βarr-2YFP and PTHRSEP were previously described by the Vilardaga lab (5, 21). βarr1Rluc8 was provided by Dr. Zachary Freyberg. Gβ1BiFc (Cer(1–158)-Gβ1) and Gγ2BiFc (CFP(159–238)-Gγ2) were a gift from Dr. Catherine Berlot and can be found in Addgene (55707).
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