Figure 7.

For default parameters (figure 3b), simple coupling of WP to cell boundary velocity (equation (6.1)) yields transient deformation (b,c), followed by steady translation (from (e) onwards), starting from a fully polarized circular cell (a). Boundary motion for OT with default parameters (figure 3a) yields rapid constriction (g–i) without significant translation. Concentration profiles along the vertical symmetry axis of each cell are shown for the WP case (e), whereas only the initial (solid) and final (dashed) profiles are shown for the OT case (j). For each cell, the polymerization threshold u* is shown as a cyan contour.