Figure 6. Simulations with Scheme 3 of force-[Pi] curves and underlying distributions of cross-bridges in force-generating states in fast and slow myofibrils.
A, simulations (lines) of experimental force-[Pi] data (points) obtained in psoas (•) and soleus (○) myofibrils at 15 °C. B, simulation of experimental force-log[Pi] data obtained in psoas myofibrils at 5 °C. C, fractions of cross-bridges in the two states AM*.ADP and AM*.ADP.Pi of Scheme 3 associated with force generation as a function of [Pi]. Continuous line: psoas myofibrils; dotted line: soleus.