Table 1.
| Qmax (nC/μF) | V1/2 − Q (mV) | (ΔF/F0)max | V1/2 − (ΔF/F0)max (mV) | |
|---|---|---|---|---|
| rb-β1a | 11.07 ± 0.77 (n = 22) | −4.49 ± 0.86 | 1.96 ± 0.17 (n = 23) | 1.68 ± 1.81 |
| rb-β1aAAA | 8.80 ± 0.59 (n = 35) | −2.29 ± 0.64 | 1.25 ± 0.11 (n = 41) | 7.80 ± 0.93 |
| zf-β1a | 11.13 ± 1.72 (n = 12) | −3.97 ± 2.19 | 1.75 ± 0.36 (n = 9) | −0.06 ± 3.49 |
| zf-β1aAAA | 10.93 ± 1.00 (n = 18) | −3.39 ± 1.06 | 1.45 ± 0.18 (n = 14) | 8.91 ± 2.32 |
Values of maximal intramembrane charge movement (Qmax), maximal intracellular Ca2+ release ((ΔF/F0)max) and the corresponding half-maximal activation potentials, recorded from relaxed myotubes transfected with either β1a or β1aAAA mutant subunits from zebrafish and rabbit.