View source for 6toi


==Crystal structure of human BCL6 BTB domain in complex with compound 11f==
<StructureSection load='6toi' size='340' side='right'caption='[[6toi]], [[Resolution|resolution]] 1.58&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6toi]] 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=6TOI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TOI 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]] 1.58&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DMS:DIMETHYL+SULFOXIDE'>DMS</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NQN:2-chloranyl-4-[[1-methyl-3-[(3~{R})-3-oxidanylbutyl]-2-oxidanylidene-benzimidazol-5-yl]amino]pyridine-3-carbonitrile'>NQN</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=6toi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6toi OCA], [https://pdbe.org/6toi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6toi RCSB], [https://www.ebi.ac.uk/pdbsum/6toi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6toi 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 ==
Deregulation of the transcriptional repressor BCL6 enables tumorigenesis of germinal center B-cells, and hence BCL6 has been proposed as a therapeutic target for the treatment of diffuse large B-cell lymphoma (DLBCL). Herein we report the discovery of a series of benzimidazolone inhibitors of the protein-protein interaction between BCL6 and its co-repressors. A subset of these inhibitors were found to cause rapid degradation of BCL6, and optimization of pharmacokinetic properties led to the discovery of 5-((5-chloro-2-((3R,5S)-4,4-difluoro-3,5-dimethylpiperidin-1-yl)pyrimidin-4-yl)am ino)-3-(3-hydroxy-3-methylbutyl)-1-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-one (CCT369260), which reduces BCL6 levels in a lymphoma xenograft mouse model following oral dosing.

Achieving In Vivo Target Depletion through the Discovery and Optimization of Benzimidazolone BCL6 Degraders.,Bellenie BR, Cheung KJ, Varela A, Pierrat OA, Collie GW, Box GM, Bright MD, Gowan S, Hayes A, Rodrigues MJ, Shetty KN, Carter M, Davis OA, Henley AT, Innocenti P, Johnson LD, Liu M, de Klerk S, Le Bihan YV, Lloyd MG, McAndrew PC, Shehu E, Talbot R, Woodward HL, Burke R, Kirkin V, van Montfort RLM, Raynaud FI, Rossanese OW, Hoelder S J Med Chem. 2020 Apr 10. doi: 10.1021/acs.jmedchem.9b02076. PMID:32275432<ref>PMID:32275432</ref>

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

==See Also==
*[[B-cell lymphoma proteins 3D structures|B-cell lymphoma proteins 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Collie GW]]
[[Category: Le Bihan Y-V]]
[[Category: Rodrigues MJ]]
[[Category: Van Montfort RLM]]