Fig. 3.

Electrostatic forces on the Eg5 motor domain and tubulin heterodimer at distances from 14 Å to 40 Å. α-tubulin and β-tubulin are shown in blue and pink, respectively (A) Net direction of the electrostatic force on the Eg5 motor domain (orange) with tubulin heterodimer at distances from 14 Å to 40 Å with a step size of 2 Å. (B) Electrostatic forces between the Eg5 motor domain (orange) and tubulin heterodimer at 20 Å. (C) A close-up view of (B). The blue arrows show the net force, while the red arrows represent forces on individual residues of the Eg5 motor domain. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)