View source for 6ulq


==BRD2-BD1 in complex with the cyclic peptide 4.2_3==
<StructureSection load='6ulq' size='340' side='right'caption='[[6ulq]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6ulq]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6ULQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ULQ 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]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</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=6ulq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ulq OCA], [https://pdbe.org/6ulq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ulq RCSB], [https://www.ebi.ac.uk/pdbsum/6ulq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ulq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/BRD2_HUMAN BRD2_HUMAN] May play a role in spermatogenesis or folliculogenesis (By similarity). Binds hyperacetylated chromatin and plays a role in the regulation of transcription, probably by chromatin remodeling. Regulates transcription of the CCND1 gene. Plays a role in nucleosome assembly.<ref>PMID:18406326</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Cyclic peptide library screening technologies show immense promise for identifying drug leads and chemical probes for challenging targets. However, the structural and functional diversity encoded within such libraries is largely undefined. We have systematically profiled the affinity, selectivity, and structural features of library-derived cyclic peptides selected to recognize three closely related targets: the acetyllysine-binding bromodomain proteins BRD2, -3, and -4. We report affinities as low as 100 pM and specificities of up to 10(6)-fold. Crystal structures of 13 peptide-bromodomain complexes reveal remarkable diversity in both structure and binding mode, including both alpha-helical and beta-sheet structures as well as bivalent binding modes. The peptides can also exhibit a high degree of structural preorganization. Our data demonstrate the enormous potential within these libraries to provide diverse binding modes against a single target, which underpins their capacity to yield highly potent and selective ligands.

Cyclic peptides can engage a single binding pocket through highly divergent modes.,Patel K, Walport LJ, Walshe JL, Solomon PD, Low JKK, Tran DH, Mouradian KS, Silva APG, Wilkinson-White L, Norman A, Franck C, Matthews JM, Guss JM, Payne RJ, Passioura T, Suga H, Mackay JP Proc Natl Acad Sci U S A. 2020 Oct 27;117(43):26728-26738. doi: , 10.1073/pnas.2003086117. Epub 2020 Oct 12. PMID:33046654<ref>PMID:33046654</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6ulq" 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: Synthetic construct]]
[[Category: Mackay JP]]
[[Category: Patel K]]
[[Category: Walport LJ]]
[[Category: Walshe JL]]