Table 1.

Time constants of inactivation and amplitude ratios obtained from fitting recovery from inactivation with a bi-exponential function

	τrecover,fast	τrecover,slow	Afast/Aslow	n
A. Fitted time constants
″fKv1.4 ΔN	0.21 ± 0.04 s	2.94 ± 0.15 s	0.33 ± 0.05	7
″fKv1.4[V561A]ΔN	0.11 ± 0.02 s	2.41 ± 0.14 s	2.40 ± 0.37	7
″fKv1.4[V561A]ΔN + 500 μm quinidine	0.12 ± 0.01 s	2.64 ± 0.22 s	0.98 ± 0.27	7
″fKv1.4[V561A]ΔN + 1 mm quinidine	0.03 ± 0.01 s	2.81 ± 0.18 s	0.22 ± 0.10	7
B. Fixed time constants
″fKv1.4 ΔN:	0.12 s	2.70 s	0.28 ± 0.06	7
″fKv1.4[V561A]ΔN	0.12 s	2.70 s	2.85 ± 0.54	7
″fKv1.4[V561A]ΔN + 500 μm quinidine	0.12 s	2.70 s	1.03 ± 0.26	7
″fKv1.4[V561A]ΔN + 1 mm quinidine	0.12 s	2.70 s	0.27 ± 0.10	7