Figure 11
Electrostatic funnel converging into AP in the Loose protomer of AcrB. Only the strongest field lines are shown and coloured red to blue from negative (−10 kbT/e) to positive (+10 kbT/e) potential (‘kb’ is the Boltzmann constant, ‘T’ is absolute temperature and ‘e’ is charge of an electron). AP is shown in green and the rest of the porter domain in white surface representation.
