The statics of the translational movements of the KIF1A head in one ATP-hydrolysis cycle.

*) The chi-square test for the null hypothesis “If the KIF1A head succeeds in detaching itself from MT, the forward and backward binding events are equally probable.”**Based on the null hypothesis, the probability to observe the current data. The null hypothesis was “accepted” or “rejected” by the significance level 0.05. Data here do not include re-detachment and re-attachment processes, which did not produce any significant bias (see Fig. 9 and sub-section “The statics of the re-detachment and the reattachment process”).