Motility often plays a decisive role in the survival of species. Five systems of motility have been
studied in depth: those propelled by bacterial flagella, eukaryotic actin polymerization and …

We have estimated the step size of the myosin cross-bridge (d, displacement of an actin
filament per one ATP hydrolysis) in an in vitro motility assay system by measuring the velocity of …

Publisher Summary One important result from in vitro studies of the interaction of the major
proteins of muscle, actin and myosin, has been the growing recognition that nearly any …

Motor proteins are able to move protein filaments in vitro. However, useful work cannot be
extracted from the existing in vitro systems because filament motions are in random directions …

Assembled actin filaments support cellular signaling, intracellular trafficking, and cytokinesis.
ATP hydrolysis triggered by actin assembly provides the structural cues for filament …

Biological molecular motors have a number of unique advantages over artificial motors,
including efficient conversion of chemical energy into mechanical work and the potential for self-…

To test the hypothesis that the myosin II motor domain (S1) preferentially binds to specific
subsets of actin filaments in vivo, we expressed GFP-fused S1 with mutations that enhanced its …

Organelle movement is essential for efficient cellular function in eukaryotes. Chloroplast
photorelocation movement is important for plant survival as well as for efficient photosynthesis. …

10.7554/eLife.04806.001 High-speed atomic force microscopy was employed to observe
structural changes in actin filaments induced by cofilin binding. Consistent with previous …

Myosin is a mechanochemical transducer and serves as a motor for various motile activities
such as cell migration, cytokinesis, maintenance of cell shape, phagocytosis, and …