Characteristic time required for processive motors to build to stall, tbuild, scaled as max max−1K−1. (A) A linear increase of tbuild was observed with max / max, with K = 0.01 pN/nm. The values of koff(0), kon, and Nheads were varied from 10 s−1 to 191 s−1, 1 s−1 to 10 s−1, and 6 to 600, respectively. (B) tbuild also increased linearly with 1/K. Parameter values: Nheads = 50, ρd(0) = 0.05 (kon = 10 s−1 and koff(0) =191 s−1). (C) Final scaling relationship for both force-dependent and force-independent motors. The same ranges of koff(0), kon, and Nheads as in A were used, with K ranging from 0.001 to 1 pN/nm. Each data point is from a single simulation of 200 s. To see this figure in color, go online.