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Two-state model. Profiles of the bound motor density ρb for active and thermal unbinding of motors at the filament end. A motor at the end of the filament detaches with the same probability as at any other filament site (thermal unbinding, solid lines) or by a forward step, i.e., with rate α (active unbinding, dashed lines). L = 600, R = 25, parameters of motion as in Fig. 4; and N = 200, 800, 1400, 2000, and 2600 (from right to left).
