Table 2.

Deactivation kinetics of the wild-type and single point mutant channels in the virtual absence of Ca²⁺. (N.D. not determined)

Channel	Pre-τ (−200 mV) (ms)	Post-τ (−200 mV) (ms)	Δτ (ms)	Ratio (Post-τ/Pre-τ)
WT	0.093 ± 0.004	0.144 ± 0.008	0.051 ± 0.007	1.55
M10L	0.085 ± 0.003	0.117 ± 0.006	0.032 ± 0.003	1.38
M21L	0.088 ± 0.005	0.123 ± 0.016	0.035 ± 0.017	1.40
M30L	0.104 ± 0.007	0.142 ± 0.022	0.039 ± 0.016	1.37
M94L	0.079 ± 0.003	0.098 ± 0.009	0.019 ± 0.009	1.25
M104L	0.096 ± 0.012	0.139 ± 0.039	0.043 ± 0.028	1.44
M154L	0.095 ± 0.007	0.147 ± 0.001	0.052 ± 0.007	1.55
M282L	0.081 ± 0.003	0.127 ± 0.007	0.046 ± 0.005	1.57
M285L	N.D.	N.D.	N.D.	N.D.
M304L	0.095 ± 0.003	0.125 ± 0.007	0.030 ± 0.006	1.31
M314L	0.072 ± 0.002	0.088 ± 0.005	0.016 ± 0.004	1.22
M442L	0.082 ± 0.006	0.102 ± 0.011	0.021 ± 0.005	1.25
M460L	0.092 ± 0.009	0.123 ± 0.011	0.031 ± 0.002	1.34
M506L	0.099 ± 0.014	0.126 ± 0.002	0.027 ± 0.012	1.27
M513L	0.085 ± 0.003	0.122 ± 0.004	0.038 ± 0.007	1.44
M536L	0.167 ± 0.011	0.206 ± 0.022	0.038 ± 0.014	1.20
M565L	0.086 ± 0.010	0.133 ± 0.014	0.048 ± 0.018	1.56
M652L	0.086 ± 0.010	0.137 ± 0.023	0.051 ± 0.017	1.59
M663L	0.098 ± 0.003	0.158 ± 0.013	0.060 ± 0.010	1.61
M679L	0.079 ± 0.003	0.114 ± 0.008	0.035 ± 0.004	1.43
M691L	0.089 ± 0.006	0.127 ± 0.012	0.038 ± 0.007	1.43
M712L	0.090 ± 0.005	0.135 ± 0.024	0.045 ± 0.020	1.50
M739L	0.089 ± 0.005	0.114 ± 0.009	0.025 ± 0.005	1.29
M799L	0.090 ± 0.005	0.126 ± 0.011	0.036 ± 0.010	1.40
M830L	0.093 ± 0.009	0.135 ± 0.022	0.042 ± 0.014	1.46
M851L	0.082 ± 0.005	0.125 ± 0.017	0.043 ± 0.014	1.53
M864L	0.093 ± 0.007	0.172 ± 0.028	0.072 ± 0.027	1.85
M924L	0.103 ± 0.003	0.125 ± 0.004	0.014 ± 0.009	1.21
M1009L	0.100 ± 0.009	0.147 ± 0.016	0.047 ± 0.009	1.47
M1053L	0.087 ± 0.009	0.114 ± 0.009	0.027 ± 0.016	1.31