Figure 6. Search, capture, pull, and release model of contractile ring assembly.

(A) Contraction of a broad band of myosin nodes into a narrow ring in fission yeast. (B) Processes in the model. (C) Simulated images of condensing broad band of nodes as a function of time (seconds). The y-axis in each simulated image is the arc length around the cylindrical body of a cell of radius R. The x-axis shows 4.5 μm along the long axis of the cell. Nodes are shown in red, actin filaments in green. Using parameter values measured in experiments, nodes formed an equatorial ring within a time consistent with experiment