Fig. 4.

Different protocols for the curvature change. (A) Instantaneous: The target filament radius changes globally throughout the filament to $R_{\text{target}}/R_{\text{cell}}$, as indicated in the key, within a single time step. (B) Sequential: The filament curvature change starts at one end of the filament and propagates at a rate $v_{\text{curv}}$ to the other end, here shown for $R_{\text{target}}/R_{\text{cell}}=5.5\%$. (C) Randomized: Random bonds along the filament constrict at a rate $v_{\text{curv}}$, here shown for $R_{\text{target}}/R_{\text{cell}}=5.5\%$. In all the protocols, once the entire filament has transitioned, it is disassembled from both ends at a rate $v_{\text{dis}}$. The value of $v_{\text{dis}}$ does not influence the division curves (SI Appendix, Fig. S4). A–C, Right compare the normalized diameter of the cell at the midzone as a function of time. We selected only simulations that led to division and averaged over simulation seeds and different disassembly rates.