| Structural highlights
Function
[TTK_HUMAN] Phosphorylates proteins on serine, threonine, and tyrosine. Probably associated with cell proliferation. Essential for chromosome alignment by enhancing AURKB activity (via direct CDCA8 phosphorylation) at the centromere, and for the mitotic checkpoint.[1]
Publication Abstract from PubMed
Monopolar spindle 1 (Mps1) is an attractive cancer drug target due to the important role that it plays in centrosome duplication, the spindle assembly checkpoint, and the maintenance of chromosomal stability. A design based on JNK inhibitors with an aminopyridine scaffold and subsequent modifications identified diaminopyridine 9 with an IC50 of 37 nM. The X-ray structure of 9 revealed that the Cys604 carbonyl group of the hinge region flips to form a hydrogen bond with the aniline NH group in 9. Further optimization of 9 led to 12 with improved cellular activity, suitable pharmacokinetic profiles, and good in vivo efficacy in the mouse A549 xenograft model. Moreover, 12 displayed excellent selectivity over 95 kinases, indicating the contribution of its unusual flipped-peptide conformation to its selectivity.
Diaminopyridine-based potent and selective mps1 kinase inhibitors binding to an unusual flipped-Peptide conformation.,Kusakabe K, Ide N, Daigo Y, Itoh T, Higashino K, Okano Y, Tadano G, Tachibana Y, Sato Y, Inoue M, Wada T, Iguchi M, Kanazawa T, Ishioka Y, Dohi K, Tagashira S, Kido Y, Sakamoto S, Yasuo K, Maeda M, Yamamoto T, Higaki M, Endoh T, Ueda K, Shiota T, Murai H, Nakamura Y ACS Med Chem Lett. 2012 Jun 6;3(7):560-4. doi: 10.1021/ml3000879. eCollection, 2012 Jul 12. PMID:24900510[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Jelluma N, Brenkman AB, van den Broek NJ, Cruijsen CW, van Osch MH, Lens SM, Medema RH, Kops GJ. Mps1 phosphorylates Borealin to control Aurora B activity and chromosome alignment. Cell. 2008 Jan 25;132(2):233-46. doi: 10.1016/j.cell.2007.11.046. PMID:18243099 doi:10.1016/j.cell.2007.11.046
- ↑ Kusakabe K, Ide N, Daigo Y, Itoh T, Higashino K, Okano Y, Tadano G, Tachibana Y, Sato Y, Inoue M, Wada T, Iguchi M, Kanazawa T, Ishioka Y, Dohi K, Tagashira S, Kido Y, Sakamoto S, Yasuo K, Maeda M, Yamamoto T, Higaki M, Endoh T, Ueda K, Shiota T, Murai H, Nakamura Y. Diaminopyridine-based potent and selective mps1 kinase inhibitors binding to an unusual flipped-Peptide conformation. ACS Med Chem Lett. 2012 Jun 6;3(7):560-4. doi: 10.1021/ml3000879. eCollection, 2012 Jul 12. PMID:24900510 doi:http://dx.doi.org/10.1021/ml3000879
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