Figure 7.

Final result of Eq. (3). Filament overlap (P_ovl, solid gray line) times the product of the amount of cleared active sites and myosin binding (P_aas ⋅ P_esa, black dotted lines) is shown for several relative calcium concentrations (colored dashed lines). The scaled version of this amount ($\varsigma \cdot P_{\text{ovl}}\cdot P_{\text{aas}}\cdot P_{\text{esa}}$) is shown by the correspondingly colored solid lines and represents the relative active force-length relation (FLAR) of the half-sarcomere. The dashed vertical lines show the edges of the Gordon et al. (1966) plateau region (see text). The dotted vertical line at 0.8 nm is the initial (half-)myosin filament length. To see this figure in color, go online.