A, peak currents normalized to initial currents are shown as dependent on time for α1C,77K and α1C,77L channels recorded at test potentials of 35 mV. Comparison of currents at 4 min indicated no significant (P > 0.05) difference in current size between the α1C,77K and α1C,77L channels. B, representative current traces recorded for α1C,77K and α1C,77L channels at 1 and 4 min as indicated in A. Dotted lines denote zero current level.