View source for 6kec


==Crystal structure of BRD4 bromodomain 1 (BD1) in complex with 4-ethoxy-5,16-dimethoxy-11-methyl-2-oxa-11-azatetracyclo[8.6.1.03,8.013,17]heptadeca-1(17),3,5,7,9,13,15-heptaen-12-one==
<StructureSection load='6kec' size='340' side='right'caption='[[6kec]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6kec]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6KEC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6KEC FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.35&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D9C:4-ethoxy-5,16-dimethoxy-11-methyl-2-oxa-11-azatetracyclo[8.6.1.03,8.013,17]heptadeca-1(17),3,5,7,9,13,15-heptaen-12-one'>D9C</scene>, <scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6kec FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6kec OCA], [https://pdbe.org/6kec PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6kec RCSB], [https://www.ebi.ac.uk/pdbsum/6kec PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6kec ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/BRD4_HUMAN 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.<ref>PMID:12543779</ref> <ref>PMID:11733348</ref> 
== Function ==
[https://www.uniprot.org/uniprot/BRD4_HUMAN BRD4_HUMAN] Plays a role in a process governing chromosomal dynamics during mitosis (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Epigenetic regulation is known to play a key role in progression of anti-cancer therapeutics. Lysine acetylation is an important mechanism in controlling gene expression. There has been increasing interest in bromodomain owing to its ability to modulate transcription of various genes as an epigenetic 'reader.' Herein, we report the design, synthesis, and X-ray studies of novel aristoyagonine (benzo[6,7]oxepino[4,3,2-cd]isoindol-2(1H)-one) derivatives and investigate their inhibitory effect against Brd4 bromodomain. Five compounds 8ab, 8bc, 8bd, 8be, and 8bf have been discovered with high binding affinity over the Brd4 protein. Co-crystal structures of these five inhibitors with human Brd4 bromodomain demonstrated that it has a key binding mode occupying the hydrophobic pocket, which is known to be the acetylated lysine binding site. These novel Brd4 bromodomain inhibitors demonstrated impressive inhibitory activity and mode of action for the treatment of cancer diseases.

Synthesis and Structure-Activity Relationships of Aristoyagonine Derivatives as Brd4 Bromodomain Inhibitors with X-ray Co-Crystal Research.,Yoo M, Park TH, Yoo M, Kim Y, Lee JY, Lee KM, Ryu SE, Lee BI, Jung KY, Park CH Molecules. 2021 Mar 17;26(6). pii: molecules26061686. doi:, 10.3390/molecules26061686. PMID:33802888<ref>PMID:33802888</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6kec" style="background-color:#fffaf0;"></div>

==See Also==
*[[Bromodomain-containing protein 3D structures|Bromodomain-containing protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Lee BI]]
[[Category: Park TH]]