Table 3.

Activation kinetics of alternatively spliced KCNQ2 clones

Splice variant	τ1 (ms)	τ2 (ms)	A2 (%)
Form A	126 ± 18	697 ± 104	17 ± 7
Form B	195 ± 24	1626 ± 365	25 ± 4
Form C	102 ± 15	571 ± 127	29 ± 9
Form E	129 ± 14	639 ± 109	17 ± 6
Form B(ΔE15a)	120 ± 13	671 ± 123	11 ± 2

Activation currents were recorded at −20 mV following a step from −50 mV (see Fig. 5Ab). For other details see Table 2. Time constants for Form B were significantly larger (P < 0.02–0.05) than those for each of the other splice variants.