View source for 6fgi


==Crystal Structure of BAZ2A bromodomain in complex with 3-amino-2-methylpyridine derivative 2==
<StructureSection load='6fgi' size='340' side='right' caption='[[6fgi]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6fgi]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FGI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6FGI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=D9K:~{N}-[(3~{S})-1,1-bis(oxidanylidene)thian-3-yl]-2-methyl-pyridin-3-amine'>D9K</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6fgh|6fgh]], [[5l8t|5l8t]], [[5l96|5l96]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BAZ2A, KIAA0314, TIP5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6fgi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fgi OCA], [http://pdbe.org/6fgi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6fgi RCSB], [http://www.ebi.ac.uk/pdbsum/6fgi PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6fgi ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/BAZ2A_HUMAN BAZ2A_HUMAN]] Essential component of the NoRC (nucleolar remodeling complex) complex, a complex that mediates silencing of a fraction of rDNA by recruiting histone-modifying enzymes and DNA methyltransferases, leading to heterochromatin formation and transcriptional silencing. In the complex, it plays a central role by being recruited to rDNA and by targeting chromatin modifying enzymes such as HDAC1, leading to repress RNA polymerase I transcription. Recruited to rDNA via its interaction with TTF1 and its ability to recognize and bind histone H4 acetylated on 'Lys-16' (H4K16ac), leading to deacetylation of H4K5ac, H4K8ac, H4K12ac but not H4K16ac. Specifically binds pRNAs, 150-250 nucleotide RNAs that are complementary in sequence to the rDNA promoter; pRNA-binding is required for heterochromatin formation and rDNA silencing (By similarity). 
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== Publication Abstract from PubMed ==
The bromodomain-containing protein BAZ2A is a validated target in prostate cancer, while the function of its paralog BAZ2B is still undefined. The bromodomains of BAZ2A and BAZ2B have a very similar binding site for their natural ligand, the acetylated lysine side chain. Here, we present an analysis of the binding modes of eight compounds belonging to three distinct chemical classes. For all compounds, the moiety mimicking the natural ligand makes essentially identical interactions in the BAZ2A and BAZ2B bromodomains. In contrast, the rest of the molecule is partially solvent exposed and shows different orientations and interactions in the two bromodomains. Some of these differences could be exploited for designing selective inhibitors within the BAZ2 bromodomain subfamily.

Structural Analysis of Small Molecule Binding to the BAZ2A and BAZ2B Bromodomains.,Dalle Vedove A, Spiliotopoulos D, D'Agostino VG, Marchand JR, Unzue A, Nevado C, Lolli G, Caflisch A ChemMedChem. 2018 May 17. doi: 10.1002/cmdc.201800234. PMID:29770599<ref>PMID:29770599</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 6fgi" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Human]]
[[Category: Caflisch, A]]
[[Category: Lolli, G]]
[[Category: Marchand, J R]]
[[Category: Vedove, A Dalle]]
[[Category: Four helical bundle]]
[[Category: Transcription]]