FIGURE 4.
BicD increases the fraction of processively moving kinesin‐1 motors. (A) Kymographs illustrating the trajectories of (left) kinesin or (right) the kinesin‐BicDCC2‐CC3 complex on MTs. (B) Recruitment of kinesin (motors/s/μm/μM) (0.32 ± 0.17, n = 42 MTs), the kinesin‐BicDCC2‐CC3 complex (0.50 ± 24, n = 41 MTs) and kinesinΔH2 (0.67 ± 0.24, n = 33 MTs) to the MT. Mean ± SD, N = 3 experiments. One‐way ANOVA with Tukey's multiple comparison, p values indicated on figure. (C) Percentage of bound motors that move processively (green), diffusively (purple) or that were static (gray). The percentage of processive events were 28% for kinesin, 52% for the kinesin‐BicDCC2‐CC3 complex and 48% for kinesinΔH2. (D) Speed distributions of kinesin (0.25 ± 0.19 μm/s, n = 74), the kinesin‐BicDCC2‐CC3 complex (0.33 ± 0.19, n = 84) and kinesinΔH2 (0.43 ± 0.25 μm/s, n = 111). Mean ± SD, N = 3 experiments. One‐way ANOVA with Tukey's multiple comparison, p values indicated on figure. (E) Run length of kinesin (1.2 ± 0.1 μm, n = 34), the kinesin‐BicDCC2‐CC3 complex (2.3 ± 0.1 μm, n = 63) and kinesinΔH2 (1.9 ± 0.1 μm, n = 79). N = 3 experiments. One‐way ANOVA with Tukey's multiple comparison, p values indicated on figure.