Extended Data Table 1.
Summary of the used simulation parameters
| Parameter | Notation | Chosen value for FtsZwt (simulation units) | Parameter screening | Fitting/Constraint | |
|---|---|---|---|---|---|
| range | incre-ment | ||||
| Self-propulsion speed | v0 | 29 d/τ | fixed to correspond to treadmilling speed 40 nm/s | ||
| Bonding potential | kbond | 1000 kBT/d2 | fixed parameter (to keep the bond length constant) | ||
| Timestep | δt | 1.8×10-5 τ | fixed parameter (small enough for numerical stability) | ||
| Friction coefficient | γ | 1 | fixed parameter | ||
| Attraction cutoff | r cut | 1.7 d (1 d for no attraction) | fixed parameter | ||
| Filament length | L f | 8 d | 8–40 | 8 | chosen to correspond to filament length 400 nm and thickness 50 nm |
| Peclet number (changed by thermal noise) | Pe | 900 | 10–10000 | 200 | chosen according to variation of single filament trajectories (Fig. 1b, Extended Data Fig. 4l, m) |
| Bending rest angle | dθ | 0.06 rad | 0.0–0.07 | 0.01 | chosen according to single filament trajectories (Fig. 1b) and collision histogram (Extended Data Fig. 4n) |
| Packing fraction | Φ | 0.05–0.95 | 0.05–0.95 | ~ 0.05 | Values chosen according to the titration curve (Extended Data Fig. 1b) |
| Flexure number (changed by bending rigidity) | 40 | 5–200 | free parameter | ||
| Interaction strength | ε | 0.1 kBT (same for no attraction) | 0.1–1.5 | 0.15 | free parameter |