Figure 2 - full size

 

Figure 2.
Figure 2: Structure of the Cdc42/f–ACK complex. a, Stereoview of the backbone (C trace) of residues 2–179 of Cdc42 and residues 504–543 of f-ACK from the 20 lowest energy structures (out of 58 that converged from the 100 computed). In the final structures, no distance restraint was violated by more than 0.5 å and no dihedral angle restraint by more than 6.0°. The structures have good covalent geometry and non-bonded contacts (Table 2). b, Representation of the structure closest to the mean in the same orientation as that in a. c, Space-filled representation of the Cdc42/f–ACK complex, showing the hairpin in ACK and the interactions with switch II. f-ACK wraps around Cdc42 forming an extensive interface, burying a surface area of 4,200 å^2 between the two molecules. The structure is rotated 120° about the z -axis compared to b. Figures 2 and 3 were generated using Molscript^29 and Raster3D^30. Cdc42 is in blue and f-ACK is yellow.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (1999, 399, 384-388) copyright 1999.