4j0r

Crystal Structure of the first bromodomain of human BRD4 in complex with a 3,5-dimethylisoxazol ligand

spinqualitylabelsall models 4j0r, resolution 1.72Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4j0r 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 1.72Å Ligands: 1H2, EDO, IOD 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 The bromodomain protein module, which binds to acetylated lysine, is emerging as an important epigenetic therapeutic target. We report the structure-guided optimization of 3,5-dimethylisoxazole derivatives to develop potent inhibitors of the BET (bromodomain and extra terminal domain) bromodomain family with good ligand efficiency. X-ray crystal structures of the most potent compounds reveal key interactions required for high affinity at BRD4(1). Cellular studies demonstrate that the phenol and acetate derivatives of the lead compounds showed strong antiproliferative effects on MV4;11 acute myeloid leukemia cells, as shown for other BET bromodomain inhibitors and genetic BRD4 knockdown, whereas the reported compounds showed no general cytotoxicity in other cancer cell lines tested. Optimization of 3,5-dimethylisoxazole derivatives as potent bromodomain ligands.,Hewings DS, Fedorov O, Filippakopoulos P, Martin S, Picaud S, Tumber A, Wells C, Olcina MM, Freeman K, Gill A, Ritchie AJ, Sheppard DW, Russell AJ, Hammond EM, Knapp S, Brennan PE, Conway SJ J Med Chem. 2013 Apr 25;56(8):3217-27. doi: 10.1021/jm301588r. Epub 2013 Apr 5. PMID:23517011 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Bromodomain-containing protein 3D structures

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