Table 1

Deactivation kinetics for hKv1.4 and heptad leucine mutant channel constructs

Membrane Potential	τ_tails (± SD_{n − 1})
Membrane Potential	hKv1.4 (n = 8)	L1F (n = 5)	L2F (n = 6)	L3F (n = 9)	L4F (n = 11)	L5F (n = 7)
mV	ms
−100	4.66 ± 1.19	2.38 ± 0.16	1.21 ± 0.83	2.72 ± 0.68	1.20 ± 0.46	2.26 ± 1.18
−90	5.22 ± 1.26	2.77 ± 0.85	1.42 ± 0.89	3.17 ± 0.39	1.41 ± 0.62	2.08 ± 0.67
−80	6.07 ± 2.15	3.13 ± 0.21	1.00 ± 0.50	3.61 ± 1.66	1.53 ± 0.44	3.20 ± 2.64
−70	7.43 ± 1.84	3.42 ± 0.25	1.21 ± 0.47	5.55 ± 2.44	1.51 ± 0.54	2.73 ± 1.82
−60	10.86 ± 2.57	3.68 ± 0.88	1.19 ± 0.62	6.06 ± 1.99	1.79 ± 0.58	2.75 ± 1.42
−50	14.98 ± 6.29	2.81 ± 1.34^1-a	1.40 ± 0.82	7.38 ± 1.81	1.68 ± 0.52^1-e	1.96 ± 0.88^1-b
−40	11.37 ± 4.73^1-b	4.08 ± 1.41^1-a	1.72 ± 0.90	9.26 ± 1.68	2.36 ± 0.57^1-e	3.14 ± 1.68^1-c
−30	6.62 ± 3.99^1-b	5.40 ± 2.11^1-a	1.30 ± 0.78	9.60 ± 3.52	2.31 ± 0.46^1-e	2.78 ± 2.00
−20	5.74 ± 2.64^1-b	6.74 ± 2.88^1-a	1.60 ± 0.70	7.87 ± 4.55^1-d	2.31 ± 1.26^1-e	2.30 ± 0.54^1-a

↵1-a n = 4.
↵1-b n = 5.
↵1-c n = 6.
↵1-d n = 7.
↵1-e n = 8.