Figure 6. V477D Mutant is Deficient in β2AR-mediated Activation.
Phosphorylation of 1 mM RASASA peptide by 100–200 nM GRK2 or 200 nM V477D was assessed in the absence or presence of PI/DDM mixed micelles (PI/DDM), 80 nM isoproterenol-treated β2AR in PI/DDM mixed micelles (β2AR/ISO), or 80 nM alprenolol-treated β2AR in PI/DDM mixed micelles (β2AR/ALP). Two-way ANOVA was used to test statistical significance. Error bars indicate SEM. *, p<0.05; **, p<0.01; ***, p<0.001.