Summary of Ca2+ sensitivities of the ANO2 isoforms
| −40 mV | +40 mV | |||||||||||
| Values derived from Imax | Isoform A | Isoforms A + AΔ4 | Isoform B | Isoforms B + BΔ4 | Native channel (mouse) | ANO2 variant Stephan et al., 2009 | Isoform A | Isoforms A + AΔ4 | Isoform B | Isoforms B + BΔ4 | Native channel (mouse) | ANO2 variant Stephan et al., 2009 |
| K1/2 (µM) | 2.1 ± 0.26 | 1.65 ± 0.13 | 1.33 ± 0.13 | 2.04 ± 0.20 | 3.46 ± 0.21 | 1.83 ± 0.03 | 1.35 ± 0.11 | 0.96 ± 0.09 | 1.08 ± 0.07 | 1.45 ± 0.19 | 1.48 ± 0.08 | 1.18 ± 0.11 |
| n Hill Coeff. | 1.79 ± 0.38 | 1.91 ± 0.23 | 2.49 ± 0.39 | 2.61 ± 0.81 | 1.41 ± 0.1 | 2.3 ± 0.07 | 1.87 ± 0.23 | 2.32 ± 0.47 | 2.13 ± 0.25 | 2.99 ± 0.65 | 3.12 ± 0.27 | 1.92 ± 0.27 |
| I10s/Imax at 67 µM Ca2+ | 0.62 ± 0.06 | 0.4 ± 0.05 | 0.55 ± 0.07 | 0.43 ± 0.07 | 0.59 ± 0.05 | 0.41 ± 0.06 | 1.05 ± 0.08 | 1 ± 0.07 | 0.97 ± 0.06 | 0.79 ± 0.07 | 0.50 ± 0.06 | 0.98 ± 0.04 |
| −40 mV | +40 mV | |||||||||||
| Values derived from Imax | Isoform A | Isoforms A + AΔ4 | Isoform B | Isoforms B + BΔ4 | Native channel (mouse) | Isoform A | Isoforms A + AΔ4 | Isoform B | Isoforms B + BΔ4 | Native channel (mouse) | ||
| K1/2 (µM) | 2.1 ± 0.26 | 1.65 ± 0.13 | 1.33 ± 0.13 | 2.04 ± 0.20 | 3.46 ± 0.21 | 1.83 ± 0.03 | 1.35 ± 0.11 | 0.96 ± 0.09 | 1.08 ± 0.07 | 1.45 ± 0.19 | 1.48 ± 0.08 | 1.18 ± 0.11 |
| 1.79 ± 0.38 | 1.91 ± 0.23 | 2.49 ± 0.39 | 2.61 ± 0.81 | 1.41 ± 0.1 | 2.3 ± 0.07 | 1.87 ± 0.23 | 2.32 ± 0.47 | 2.13 ± 0.25 | 2.99 ± 0.65 | 3.12 ± 0.27 | 1.92 ± 0.27 | |
| I10s/Imax at 67 µM Ca2+ | 0.62 ± 0.06 | 0.4 ± 0.05 | 0.55 ± 0.07 | 0.43 ± 0.07 | 0.59 ± 0.05 | 0.41 ± 0.06 | 1.05 ± 0.08 | 1 ± 0.07 | 0.97 ± 0.06 | 0.79 ± 0.07 | 0.50 ± 0.06 | 0.98 ± 0.04 |
All values are mean ± SEM (6–11 patches). Mouse-native channel values are from Reisert et al., 2005, and Table S2 in Stephan et al., 2009.
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