4yh3 | pdb_00004yh3

Crystal structure of human BRD4(1) in complex with 4-[(2E)-3-(4-methoxyphenyl)-2-phenylprop-2-enoyl]-3,4-dihydroquinoxalin-2(1H)-one (compound 19a)

spinqualitylabelsall models 4yh3, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4yh3 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. Ligands: Y80 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease BRD4_HUMAN Note=A chromosomal aberration involving BRD4 is found in a rare, aggressive, and lethal carcinoma arising in midline organs of young people. Translocation t(15;19)(q14;p13) with NUT which produces a BRD4-NUT fusion protein. Function BRD4_HUMAN Plays a role in a process governing chromosomal dynamics during mitosis (By similarity). Publication Abstract from PubMed Bromodomains are key transcriptional regulators that are thought to be druggable epigenetic targets for cancer, inflammation, diabetes and cardiovascular therapeutics. Of particular importance is the first of two bromodomains in bromodomain containing 4 protein (BRD4(1)). Protein-ligand docking in BRD4(1) was used to purchase a small, focused screening set of compounds possessing a large variety of core structures. Within this set, a small number of weak hits each contained a dihydroquinoxalinone ring system. We purchased other analogs with this ring system and further validated the new hit series and obtained improvement in binding inhibition. Limited exploration by new analog synthesis showed that the binding inhibition in a FRET assay could be improved to the low muM level making this new core a potential hit-to-lead series. Additionally, the predicted geometries of the initial hit and an improved analog were confirmed by X-ray co-crystallography with BRD4(1). Discovery of a new chemical series of BRD4(1) inhibitors using protein-ligand docking and structure-guided design.,Duffy BC, Liu S, Martin GS, Wang R, Hsia MM, Zhao H, Guo C, Ellis M, Quinn JF, Kharenko OA, Norek K, Gesner EM, Young PR, McLure KG, Wagner GS, Lakshminarasimhan D, White A, Suto RK, Hansen HC, Kitchen DB Bioorg Med Chem Lett. 2015 Jul 15;25(14):2818-23. doi:, 10.1016/j.bmcl.2015.04.107. Epub 2015 May 11. PMID:26022843 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Bromodomain-containing protein 3D structures

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