Figure 6.

Effects of the presence of additional P_i in solution on run length and velocity of Drosophila kinesin‐1 at saturating ATP. The results are calculated with γ = 2.3. Error bars represent SEM (n = 1000). (A) Run length versus longitudinal component (F _x) of the external force acting on the coiled‐coil stalk for DmK‐WT. Inset shows ratios of the run length in the presence of additional P_i in solution to the corresponding one in the absence of additional P_i (open symbols), and the ratio of the experimental data at [P_i] = 100 mm to that at [P_i] = 0 under the forward external force of 4 pN (filled symbol) is also shown 22. (B) Velocity versus longitudinal component (F _x) of the external force for DmK‐WT. Inset shows ratios of the velocity in the presence of additional P_i in solution to the corresponding one in the absence of additional P_i (open symbols), and the ratio of the experimental data at [P_i] = 100 mm to that at [P_i] = 0 under the forward external force of 4 pN (filled symbol) is also shown 22.