HUMAN EXTRACELLULAR SIGNAL REGULATED KINASE (EC 2.7.1.-) 6 3D structure of p38 alpha in complex with a pyridinylimidazole inhibitor as a reference was obtained by X-ray crystallography (PDB ID: 1OUK) (NAT.STRUCT.BIOL. V.,10,764,2003). This model is human extracellular signal regulated kinase constructed by FAMS Ligand&Complex based on 1OUK. HEADER HUMAN EXTRACELLULAR SIGNAL REGULATED KINASE (EC 2.7.1.-) 6 17-OCT-03 REMARK CHAIN_A pir_JC6138(8-354) REMARK 084 4-[5-[2-(1-PHENYL-ETHYLAMINO)-PYRIMIDIN-4-YL]-1- REMARK 2 084 METHYL-4-(3-TRIFLUOROMETHYLPHENYL)-1H-IMIDAZOL-2-YL]- REMARK 3 084 PIPERIDINE Figure legend: ligand is shown by cpk or stick.