FIG. 2.

Flows in the σ_R-σ_L phase plane for low [(a), 0.1 s⁻¹] and high [(b), 0.5 s⁻¹] switching rates. Solid lines are trajectories that pass through the fixed points, as discussed in the text. The Langmuir isotherm is labeled LI and the transition points TP. The bulk motor concentration is 200 nM, the motor speed is 5 μm s⁻¹, and other parameters are the reference values of Table I. Arrows indicate the vector field, which has the mathematical form of Eqs. (12) and (13).