View source for 4hbx


==Crystal Structure of the first bromodomain of human BRD4 in complex with a quinazolin ligand==
<StructureSection load='4hbx' size='340' side='right'caption='[[4hbx]], [[Resolution|resolution]] 1.62&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4hbx]] 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=4HBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HBX 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]] 1.62&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=14X:3-METHYL-6-(PYRROLIDIN-1-YLSULFONYL)-3,4-DIHYDROQUINAZOLIN-2(1H)-ONE'>14X</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=4hbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hbx OCA], [https://pdbe.org/4hbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hbx RCSB], [https://www.ebi.ac.uk/pdbsum/4hbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hbx 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 ==
The posttranslational modification of chromatin through acetylation at selected histone lysine residues is governed by histone acetyltransferases (HATs) and histone deacetylases (HDACs). The significance of this subset of the epigenetic code is interrogated and interpreted by an acetyllysine-specific protein-protein interaction with bromodomain reader modules. Selective inhibition of the bromo and extra C-terminal domain (BET) family of bromodomains with a small molecule is feasible, and this may represent an opportunity for disease intervention through the recently disclosed antiproliferative and anti-inflammatory properties of such inhibitors. Herein, we describe the discovery and structure-activity relationship (SAR) of a novel, small-molecule chemical probe for BET family inhibition that was identified through the application of structure-based fragment assessment and optimization techniques. This has yielded a potent, selective compound with cell-based activity (PFI-1) that may further add to the understanding of BET family function within the bromodomains.

Identification of a Chemical Probe for Bromo and Extra C-Terminal Bromodomain Inhibition through Optimization of a Fragment-Derived Hit.,Fish PV, Filippakopoulos P, Bish G, Brennan PE, Bunnage ME, Cook AS, Federov O, Gerstenberger BS, Jones H, Knapp S, Marsden B, Nocka K, Owen DR, Philpott M, Picaud S, Primiano MJ, Ralph MJ, Sciammetta N, Trzupek JD J Med Chem. 2012 Nov 8. PMID:23095041<ref>PMID:23095041</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4hbx" 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: Arrowsmith CH]]
[[Category: Bountra C]]
[[Category: Bunnage ME]]
[[Category: Cook AS]]
[[Category: Edwards A]]
[[Category: Felletar I]]
[[Category: Filippakopoulos P]]
[[Category: Fish PV]]
[[Category: Knapp S]]
[[Category: Owen DR]]
[[Category: Picaud S]]
[[Category: Qi J]]
[[Category: Von Delft F]]