Figure 6 - full size

Figure 6.
Figure 6. Comparison of the TolC and AcrA(45-312)-4M Coiled-Coils
The magnitude of conformational change predicted for the opening of the TolC channel coincides with the flexibility observed in the AcrA a-helical hairpin domain. The inner (yellow) and outer helices (blue) of TolC are shown superposed based on the internal structural repeat (residues 16-98 and 222-316). Below these are molecules B (red) and C (green) of AcrA(45-312)-4M, as superposed on the lipoyl domain. Direct engagement of AcrA and TolC is not modeled.