Figure 1 - full size

 

Figure 1.
Figure 1. Schematics showing the binding mode of ligands to protein kinases. (a) ATP. (b) Purvalanol B in CDK2 (PDB code 1CKP). (c) NU2058 in CDK2 (PDB code 1E1V). Hydrogen bonds are indicated by broken lines.

The above figure is reprinted by permission from John Wiley & Sons, Inc.: Proteins (2008, 73, 795-801) copyright 2008.