Table 1. The statics of the translational movements of the KIF1A head in one ATP-hydrolysis cycle.
| #sample | No-detach | +8 nm | 0 nm | −8 nm | ?2 * | P-value** | |
| stand-alone/strong | 100 | 99 | 0 | 0 | 1 | 1.00 | 3.17×10−1/Accepted |
| stand-alone/weak | 235 | 49 | 44 | 92 | 50 | 0.383 | 5.36×10−1/Accepted |
| Cargo/strong | 109 | 0 | 52 | 56 | 1 | 49.1 | 2.46×10−12/Rejected |
| cargo/weak | 150 | 0 | 43 | 81 | 26 | 4.19 | 4.07×10−2/Rejected |
| Stand-alone/weak/DH | 80 | 6 | 12 | 46 | 16 | 0.571 | 4.50×10−1/Accepted |
*
) 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”).