Figure S8.

Changes in twitch tension from Fig. 5 B (black line) by ±20% variation in binding rate, ${\mathit{k}}_{\mathbf{+}\mathbf{A}}^{\mathbf{o}}\mathbf{.}$ Increase in $k_{+A}^o$ increases the peak of the twitch tension and shows delay in relaxation. The superscript o is omitted from the figure display for clarity.