Cooperation and competition in the collective drive by motor proteins: mean active force, fluctuations, and self-load

Abstract

We consider the dynamics of a bio-filament under the collective drive of motor proteins. They are attached irreversibly to a substrate and undergo stochastic attachment-detachment with the filament to produce...

Inertia and activity: spiral transitions in semi-flexible, self-avoiding polymers

“…[20][21][22][23][24][25][26][27][28][29] Cilia-like beating and spiral rotation of overdamped semiflexible filaments at high enough activity were predicted in theoretical studies as observed in earlier motility assay experiments. 17,18,20,24,28,[30][31][32] Recent studies explored the navigation of active elements, including that of active polymers, in complex and crowded environments as well as in traps. [33][34][35][36][37][38][39] Nonetheless, filamentous objects of macroscopic size, including natural examples like millipedes, worms, and snakes and engineered entities such as granular, robotic, or hexbug chains, can exhibit significant inertial effects.…”