Structural basis for the inhibition of Aurora A kinase by a novel class of high affinity disubstituted pyrimidine inhibitors

Bioorg Med Chem Lett. 2007 Feb 1;17(3):688-91. doi: 10.1016/j.bmcl.2006.10.086. Epub 2006 Nov 2.

Abstract

The 2.25 A crystal structure of a complex of Aurora A kinase (AIKA) with cyclopropanecarboxylic acid-(3-(4-(3-trifluoromethyl-phenylamino)-pyrimidin-2-ylamino)-phenyl)-amide 1 is described here. The inhibitor binding mode is novel, with the cyclopropanecarboxylic acid moiety directed towards the solvent exposed region of the ATP-binding pocket, and several induced structural changes in the active-site compared with other published AIK structures. This structure provides context for the available SAR data on this compound class, and could be exploited for the design of analogs with increased affinity and selectivity for AIK.

MeSH terms

  • Animals
  • Aurora Kinases
  • Cell Line
  • Crystallography, X-Ray
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / pharmacology*
  • ErbB Receptors / drug effects
  • Models, Molecular
  • Molecular Conformation
  • Protein Serine-Threonine Kinases / antagonists & inhibitors*
  • Protein Serine-Threonine Kinases / chemistry
  • Pyrimidines / chemical synthesis*
  • Pyrimidines / pharmacology*
  • Structure-Activity Relationship

Substances

  • Enzyme Inhibitors
  • Pyrimidines
  • ErbB Receptors
  • Aurora Kinases
  • Protein Serine-Threonine Kinases