Gating Schemes and Conditions | Rates | Rate Constantsa (Mean ± S.E.M.) |
---|---|---|
Scheme I contaminant (∼1 μM) Ca2+ at +40 mV (n = 9) | kMCb | 5.4 ± 0.9 |
kCM | 3437 ± 396 | |
Scheme IIA zero Ca2+ at +40 mV (n = 9) | kM1M2 | 42 ± 12.7 |
kM2M1 | 32 ± 6.5 | |
kM1C1b | 408 ± 146 | |
kC1M1 | 3722 ± 386 | |
kM2C2b | 558 ± 88 | |
kC2M2 | 3492 ± 413 | |
Scheme IIB zero Ca2+ at −40 mV (n = 6) | kM0C0b | 10.3 ± 3.8 |
kC0M0 | 2764 ± 247 |