Extended Data Table 1 Summary of the used simulation parameters
From: Chiral and nematic phases of flexible active filaments
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 | rcut | 1.7 d (1 d for no attraction) | fixed parameter | ||
Filament length | Lf | 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) | \({\mathcal{F}}\) | 40 | 5–200 | free parameter | |
Interaction strength | ε | 0.1 kBT (same for no attraction) | 0.1–1.5 | 0.15 | free parameter |
