4aua

Liganded X-ray crystal structure of cyclin dependent kinase 6 (CDK6)

spinqualitylabelsall models 4aua, resolution 2.31Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4aua is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.31Å Ligands: 4AU Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CDK6_HUMAN Serine/threonine-protein kinase involved in the control of the cell cycle and differentiation; promotes G1/S transition. Phosphorylates pRB/RB1 and NPM1. Interacts with D-type G1 cyclins during interphase at G1 to form a pRB/RB1 kinase and controls the entrance into the cell cycle. Involved in initiation and maintenance of cell cycle exit during cell differentiation; prevents cell proliferation and regulates negatively cell differentiation, but is required for the proliferation of specific cell types (e.g. erythroid and hematopoietic cells). Essential for cell proliferation within the dentate gyrus of the hippocampus and the subventricular zone of the lateral ventricles. Required during thymocyte development. Promotes the production of newborn neurons, probably by modulating G1 length. Promotes, at least in astrocytes, changes in patterns of gene expression, changes in the actin cytoskeleton including loss of stress fibers, and enhanced motility during cell differentiation. Prevents myeloid differentiation by interfering with RUNX1 and reducing its transcription transactivation activity, but promotes proliferation of normal myeloid progenitors. Delays senescence. Promotes the proliferation of beta-cells in pancreatic islets of Langerhans. Publication Abstract from PubMed Herein, we describe the discovery of potent and highly selective inhibitors of both CDK4 and CDK6 via structure-guided optimization of a fragment-based screening hit. CDK6 X-ray crystallography and pharmacokinetic data steered efforts in identifying compound 6, which showed >1000-fold selectivity for CDK4 over CDKs 1 and 2 in an enzymatic assay. Furthermore, 6 demonstrated in vivo inhibition of pRb-phosphorylation and oral efficacy in a Jeko-1 mouse xenograft model. Fragment-Based Discovery of 7-Azabenzimidazoles as Potent, Highly Selective, and Orally Active CDK4/6 Inhibitors.,Cho YS, Angove H, Brain C, Chen CH, Cheng H, Cheng R, Chopra R, Chung K, Congreve M, Dagostin C, Davis DJ, Feltell R, Giraldes J, Hiscock SD, Kim S, Kovats S, Lagu B, Lewry K, Loo A, Lu Y, Luzzio M, Maniara W, McMenamin R, Mortenson PN, Benning R, O'Reilly M, Rees DC, Shen J, Smith T, Wang Y, Williams G, Woolford AJ, Wrona W, Xu M, Yang F, Howard S ACS Med Chem Lett. 2012 May 17;3(6):445-9. doi: 10.1021/ml200241a. eCollection, 2012 Jun 14. PMID:24900493 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cyclin-dependent kinase 3D structures

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