Fig. 3.
α subunit affects the efficacy, but not potency of PRO. Submaximal GABA was applied by picospritzer as detailed in Materials and Methods; anesthetics were applied to the bath. (A) PRO (0.05–50 μM) potentiates GABA-induced currents in both α1β3γ2 and α6β3γ2 GABAA receptors. Data points are means ± SEM from pooled experiments (4 ≤ n ≤ 13). (B) TCEt (0.02–10 mM) potentiates GABA-induced currents in both receptor combinations (5 ≤ n ≤ 15; pooled data are shown).