Table 1.

Current Density and Fast Inactivation Gating Parameters

Channel Subunit	Peak Current at −15 mV pA/pF	V½ mV	k mV	τRecovery msec
α	−96.9 ± 17 (15)	−75.5 ± 0.80 (10)	4.8 ± 0.18 (10)	2.0 ± 0.10 (10)
α + β1	−136 ± 23 (7)	−70.9 ± 0.62 (6)**	4.4 ± 0.08 (6)	1.9 ± 0.07 (6)
α + β1/C121W	−85.0 ± 21 (7)	−72.5 ± 1.1 (6)	5.5 ± 0.26 (6)*	2.0 ± 0.15 (5)
α + β1/CTdel	−80.6 ± 14 (9)	−71.8 ± 0.91 (6)*	4.6 ± 0.14 (6)	2.0 ± 0.08 (4)

Values are means ± SEM with the number of observations in parentheses.

^*Statistically different from α-subunit only at p < 0.01.

^**Statistically different from α-subunit only at p < 0.001