Table 2.

Fitting of Families of G-V Curves by 50-state Activation Models

(50-state)	α alone		α + β3b-ΔN	α + β3b-ΔNΔC	α alone#
Ko (μM)	1.44	1.40‡	1.40	0.82	0.80 (0.8–0.88)
Kc (μM)	29.46	15.66	12.48	11.52	7.42
Vhc (mV)	52.56	141.8*	106.5	340.0	141.8 (135–155)
D	6.87	17.5*	22.55	14.2	17.5 (10–20)
L(0)	6.02 × 105	2.9 × 105	5.49 × 106	4.46 × 105	2.9 × 105 (0.25–1.0 × 106)
Q	0.594	0.38	0.221	0.15	0.40 (0.35–0.45)
Z	0.602	0.20	0.418	0.70	0.51 (0.51–0.59)
SSQ	1,168	2,830	2,112	2,260

^‡Values for Vhc, D, and L(0) were fixed to those obtained by Cox and Aldrich for α alone.

§(Cox and Aldrich 2000).