Figure 6
Typical stochastic trajectory of the model system. (a) Position of the \({\rm{PQ}}\) shuttle inside the membrane. (b–d) Electron (\({N}_{i}\)) and proton (\({N}_{i}\)) average population on the \({\rm{PQ}}\) shuttle and on the \(A\), \(B\), \(L\) and \(H\) sites. Notice the spikes corresponding to the charging and discharging of the shuttle when it approaches the N- and P-side, as well as the remarkable coupling between electron and proton motion (the latter are translocated against their electrochemical gradient). (c) Total number of electrons transferred to the Pc pool (\({n}_{e}\)) and total number of protons (\({N}_{p}\)) brought from the N- to the P-side.
