4c4i

Structure-based design of orally bioavailable pyrrolopyridine inhibitors of the mitotic kinase MPS1

spinqualitylabelsall models 4c4i, resolution 2.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4c4i is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 7PE, X20 Related: 4c4e, 4c4f, 4c4g, 4c4h, 4c4j Activity: Dual-specificity kinase, with EC number 2.7.12.1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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. Publication Abstract from PubMed The protein kinase MPS1 is a crucial component of the spindle assembly checkpoint signal and is aberrantly overexpressed in many human cancers. MPS1 is one of the top 25 genes overexpressed in tumors with chromosomal instability and aneuploidy. PTEN-deficient breast tumor cells are particularly dependent upon MPS1 for their survival, making it a target of significant interest in oncology. We report the discovery and optimization of potent and selective MPS1 inhibitors based on the 1H-pyrrolo[3,2-c]pyridine scaffold, guided by structure-based design and cellular characterization of MPS1 inhibition, leading to 65 (CCT251455). This potent and selective chemical tool stabilizes an inactive conformation of MPS1 with the activation loop ordered in a manner incompatible with ATP and substrate-peptide binding; it displays a favorable oral pharmacokinetic profile, shows dose-dependent inhibition of MPS1 in an HCT116 human tumor xenograft model, and is an attractive tool compound to elucidate further the therapeutic potential of MPS1 inhibition. Structure-Based Design of Orally Bioavailable 1H-Pyrrolo[3,2-c]pyridine Inhibitors of Mitotic Kinase Monopolar Spindle 1 (MPS1).,Naud S, Westwood IM, Faisal A, Sheldrake P, Bavetsias V, Atrash B, Cheung KM, Liu M, Hayes A, Schmitt J, Wood A, Choi V, Boxall K, Mak G, Gurden M, Valenti M, de Haven Brandon A, Henley A, Baker R, McAndrew C, Matijssen B, Burke R, Hoelder S, Eccles SA, Raynaud FI, Linardopoulos S, van Montfort RL, Blagg J J Med Chem. 2013 Dec 2. PMID:24256217 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Dual specificity protein kinase

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