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. 2015 Sep 14;10(9):e0136920. doi: 10.1371/journal.pone.0136920

Fig 2. Kinesin-1 driven MT rotations.

Fig 2

(A) Histogram of the rotational pitches of S-MTs. Median pitch of rotation is 8.4μm (iqr 8.0–9.0μm; N = 101, where N is the number of MTs), which is in agreement with the supertwist pitch of GMP-CPP MTs. (B) Variation in rotational pitch with respect to S-MT length. (C) Histogram of rotational pitches of B-S-MTs obtained from the speckle signal of QD-SA-B-S-MTs. Median pitch of rotation is 8.1μm (iqr 7.9–9.0μm; N = 34; p = 0.19 with respect to S-MTs, Mann-Whitney U test). (D) Histogram of rotational pitches obtained from the speckle signal of QD-SA-B-S-MTs. Median pitch of rotation is 8.1μm (iqr 7.7–9.0μm; N = 31; p = 0.09; p’ = 0.56 with respect to B-S-MTs). (E) Histogram of rotational pitches obtained from tracking the QDots attached to QD-SA-B-S-MTs. Median pitch of rotation is 8.4μm (iqr 8.0–9.2μm; N = 34, where N is the number of QDots; p = 0.83).