Figure 1 - full size

Figure 1.
Figure 1 Overall structure of PI3K . a, Ribbon diagram of PI3K (prepared with MOLSCRIPT31) showing the four domains: RBD (magenta), C2 (blue), helical (green) and catalytic with N-lobe (red) and C-lobe (yellow). The N-terminal region preceding the RBD and the ordered portion between the RBD and C2 domain are white. b, The solvent-accessible surface of the enzyme in the same orientation as in a (prepared with GRASP29). c, Domain organization of the PI3K classes.