Fig. 2.

Observation of Holliday junction branch migration. (A) Time courses of bead rotation at various ATP concentrations. Rotation angles were estimated from the images in Fig. 1C by centroid analysis (18). (B) ATP concentration dependence of the rotational rate. The rotational rates at the indicated ATP concentration are an average of 8–22 rotational beads. The error bars indicate the standard deviations.