Fig. 2: Single-molecule fluorescence histograms compiled from collections of individual molecules of A2AAR, A2AAR[D52N], A2AAR[I92N] and A2AAR[R291Q].

a Histograms compiled for A2AAR with no ligand added (apo), in complex with the antagonist ZM241385, and in complex with the agonist NECA. The dashed lines represent fits to Gaussian populations centered around the normalized intensities of 1 (black), 2 (blue), and 3 (red). The composite fit representing the sum of the Gaussian fitted curves is shown as a solid black line. Error bars represent the standard error calculated for each bar of the histogram. b–d Histograms compiled for b A2AAR[D52N], c A2AAR[I92N] and d A2AAR[R291Q]. Same presentation details as in (a).