Figure 4.
Expression of the high-affinity state of α6β2δ receptors is independent of the isoform of the β subunit GABA induced similar maximal current for α6β1δ, α6β2δ, and α6β3δ receptors (filled bars) with high levels of spontaneous activity indicating the presence of the high-affinity state (open bars). B and C, the concentration–response relationship for picrotoxinin block of the spontaneous current from α6β1δ and α6β3δ receptors.