Fig. 3.

Stability of time-averaged cross-bridge mean position in the absence of ATP. (A) Comparison of the cross-bridge position between the 2 IP records of the same filament on the common coordinates. Open and filled circles (diameter, 20 nm) are drawn around the center of mass positions of each gold particle in the first and the second IP records, respectively. In this and subsequent figures, broken lines indicate contour of the filament on which the particles are located. Note that filled circles are barely visible because of the nearly complete overlap of open and filled circles. (B) Histogram showing distribution of distance between the 2 contour of mass positions of the same particles in the first and the second records.