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J Med Chem. 2012 Sep 13;55(17):7841-8. doi: 10.1021/jm3008954. Epub 2012 Sep 4.

Crystal structure of human aurora B in complex with INCENP and VX-680.

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Nuffield Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford , Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, United Kingdom.


We present the structure of the human Aurora B kinase domain in complex with the C-terminal Aurora-binding region of human INCENP and the Aurora kinase inhibitor VX-680. The structure unexpectedly reveals a dimeric arrangement of the Aurora B:INCENP complex, which was confirmed to exist in solution by analytical ultracentrifugation. The dimerization involves a domain swap of the activation loop, resulting in a different conformation of the DFG motif as compared to that seen in other kinase complexes with VX-680. The binding of INCENP differs significantly from that seen in the Xenopus laevis Aurora B:INCENP complex currently used as a model for structure-based design for this important oncology target.

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