View source for 7okj


==Crystal structure of human BCL6 BTB domain in complex with compound 12c and its enantiomer 12b==
<StructureSection load='7okj' size='340' side='right'caption='[[7okj]], [[Resolution|resolution]] 1.43&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7okj]] is a 2 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=7OKJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7OKJ 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]] 1.43&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=VHN:(2S)-2-[[6-[(2-chloranyl-3-cyano-pyridin-4-yl)amino]-2-oxidanylidene-1H-quinolin-4-yl]amino]-N-methyl-propanamide'>VHN</scene>, <scene name='pdbligand=VHZ:(2R)-2-[[6-[(2-chloranyl-3-cyano-pyridin-4-yl)amino]-2-oxidanylidene-1H-quinolin-4-yl]amino]-N-methyl-propanamide'>VHZ</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=7okj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7okj OCA], [https://pdbe.org/7okj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7okj RCSB], [https://www.ebi.ac.uk/pdbsum/7okj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7okj ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/BCL6_HUMAN BCL6_HUMAN] Note=Chromosomal aberrations involving BCL6 may be a cause of B-cell non-Hodgkin lymphoma. Translocation t(3;14)(q27;q32); translocation t(3;22)(q27;q11) with immunoglobulin gene regions.  Note=A chromosomal aberration involving BCL6 may be a cause of a form of B-cell leukemia. Translocation t(3;11)(q27;q23) with POU2AF1/OBF1.  Note=A chromosomal aberration involving BCL6 may be a cause of lymphoma. Translocation t(3;4)(q27;p11) with ARHH/TTF.
== Function ==
[https://www.uniprot.org/uniprot/BCL6_HUMAN BCL6_HUMAN] Transcriptional repressor which is required for germinal center formation and antibody affinity maturation. Probably plays an important role in lymphomagenesis.<ref>PMID:9649500</ref> <ref>PMID:18280243</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We describe the optimization of modestly active starting points to potent inhibitors of BCL6 by growing into a subpocket, which was occupied by a network of five stably bound water molecules. Identifying potent inhibitors required not only forming new interactions in the subpocket but also perturbing the water network in a productive, potency-increasing fashion while controlling the physicochemical properties. We achieved this goal in a sequential manner by systematically probing the pocket and the water network, ultimately achieving a 100-fold improvement of activity. The most potent compounds displaced three of the five initial water molecules and formed hydrogen bonds with the remaining two. Compound 25 showed a promising profile for a lead compound with submicromolar inhibition of BCL6 in cells and satisfactory pharmacokinetic (PK) properties. Our work highlights the importance of finding productive ways to perturb existing water networks when growing into solvent-filled protein pockets.

Into Deep Water: Optimizing BCL6 Inhibitors by Growing into a Solvated Pocket.,Lloyd MG, Huckvale R, Cheung KJ, Rodrigues MJ, Collie GW, Pierrat OA, Gatti Iou M, Carter M, Davis OA, McAndrew PC, Gunnell E, Le Bihan YV, Talbot R, Henley AT, Johnson LD, Hayes A, Bright MD, Raynaud FI, Meniconi M, Burke R, van Montfort RLM, Rossanese OW, Bellenie BR, Hoelder S J Med Chem. 2021 Nov 30. doi: 10.1021/acs.jmedchem.1c00946. PMID:34846884<ref>PMID:34846884</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7okj" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Collie GW]]
[[Category: Le Bihan Y-V]]
[[Category: Van Montfort RLM]]