The effect of YF to VY mutation in the α1 or β3 subunits of αβγ receptors. α1_(YFΔVY) was coexpressed with β3 and γ2L, and β3_(YFΔVY) was coexpressed with α1 and γ2L. The middle column illustrates representative currents. Bar graphs are as in Figure 2. Theasterisks indicates significant difference (p < 0.05) from both αβδ and αβγ receptors. Horizontal calibration: 400 msec; vertical calibration: 150 pA for α1_(YFΔVY), and 116 pA for β3_(YFΔVY).