897371.fig.004a
(a)
897371.fig.004b
(b)
897371.fig.004c
(c)
Figure 4: Subspace volume-dependence of calcium fluctuations and open probability of a calcium-activated channel. Steady-state probability distribution for = (a) and (b) for the calcium-activated channel ( μM, μM−2 ms−1) [29, 30]. (c) Steady-state and for integer multiples of the unitary volume and different rate constants for calcium binding (0.005 to 0.15 μM−2 ms−1) with fixed.