Fig. 2. Single-filament motion and active diffusion for various propulsion forces.

(A) Filament MSD divided by the lag time for different motor concentrations ${\tilde{n}}_{\mathrm{m}}$. The lag time τ is normalized with the passive single-filament rotation time ${\mathrm{\tau }}_{\mathrm{R}}^0$, and the MSD with the filament length L². The parameters are ($\mathrm{\varphi },{\tilde{\mathrm{\ell }}}_{\mathrm{p}},\tilde{L}$) = (0.66, 3.4, 20). (B) Normalized active rotation times τ_R as function of ${\tilde{n}}_{\mathrm{m}}$ and ${\tilde{F}}_{\text{act}}$. Solid lines are a guide to the eye, parameters as in Fig. 1F with ($\mathrm{\varphi },\tilde{L}$) = (0.66, 20). (C) Normalized active diffusion constants obtained from MSD curves as a function of the filament measured $v_{\parallel }^2{\mathrm{\tau }}_{\mathrm{R}}$, parameters as in Fig. 1F with ($\mathrm{\varphi },\tilde{L}$) = (0.66, 20).