Figure 3 - full size

 

Figure 3.
Figure 3: Crystal structure of the designed enzyme–DNA complex. Left, F[o]–F[c] electron-density map of the redesigned region calculated from a refinement model lacking the redesigned side chains and bases (cyan). The computational design model (grey) fits well into the unassigned density (blue mesh, +2.2 ). Right, superposition of the design model (salmon) and the refined crystal structure (cyan) confirms the accuracy of the design. A new coordinated water molecule (red sphere) is also apparent.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (2006, 441, 656-659) copyright 2006.