Figure 21.

vL-3CR compound SB220025 is a potent p38 inhibitor. Above: Binding of SB220025 into p38 active site (PDB ID: 1BL7). The 2-amino portion forms hydrogen bonds, the kinase hinge region and the fluorine of the ligand is involved in a short contact to the backbone carbonyl-C (3.1 Å). Below: reaction scheme of the vL-3CR.