1r2b: Difference between revisions

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<StructureSection load='1r2b' size='340' side='right'caption='[[1r2b]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='1r2b' size='340' side='right'caption='[[1r2b]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1r2b]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R2B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R2B FirstGlance]. <br>
<table><tr><td colspan='2'>[[1r2b]] is a 4 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=1R2B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R2B FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1r28|1r28]], [[1r29|1r29]]</div></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BCL6 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), NCOR2 OR CTG26 ([https://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'>[https://proteopedia.org/fgij/fg.htm?mol=1r2b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r2b OCA], [https://pdbe.org/1r2b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r2b RCSB], [https://www.ebi.ac.uk/pdbsum/1r2b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r2b ProSAT]</span></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=1r2b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r2b OCA], [https://pdbe.org/1r2b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r2b RCSB], [https://www.ebi.ac.uk/pdbsum/1r2b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r2b ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== 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.  
[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 ==
== 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> [[https://www.uniprot.org/uniprot/NCOR2_HUMAN NCOR2_HUMAN]] Transcriptional corepressor of NR4A2/NURR1 and acts through histone deacetylases (HDACs) to keep promoters of NR4A2/NURR1 target genes in a repressed deacetylated state (By similarity). Mediates the transcriptional repression activity of some nuclear receptors by promoting chromatin condensation, thus preventing access of the basal transcription. Isoform 1 and isoform 5 have different affinities for different nuclear receptors.
[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>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1r2b ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1r2b ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
BCL6 encodes a transcription factor that represses genes necessary for the terminal differentiation of lymphocytes within germinal centers, and the misregulated expression of this factor is strongly implicated in several types of B cell lymphoma. The homodimeric BTB domain of BCL6 (also known as the POZ domain) is required for the repression activity of the protein and interacts directly with the SMRT and N-CoR corepressors that are found within large multiprotein histone deacetylase-containing complexes. We have identified a 17 residue fragment from SMRT that binds to the BCL6 BTB domain, and determined the crystal structure of the complex to 2.2 A. Two SMRT fragments bind symmetrically to the BCL6 BTB homodimer and, in combination with biochemical and in vivo data, the structure provides insight into the basis of transcriptional repression by this critical B cell lymphoma protein.
Mechanism of SMRT corepressor recruitment by the BCL6 BTB domain.,Ahmad KF, Melnick A, Lax S, Bouchard D, Liu J, Kiang CL, Mayer S, Takahashi S, Licht JD, Prive GG Mol Cell. 2003 Dec;12(6):1551-64. PMID:14690607<ref>PMID:14690607</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1r2b" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Ahmad, K F]]
[[Category: Ahmad KF]]
[[Category: Bouchard, D]]
[[Category: Bouchard D]]
[[Category: Kiang, C L]]
[[Category: Kiang CL]]
[[Category: Lax, S A]]
[[Category: Lax SA]]
[[Category: Licht, J D]]
[[Category: Licht JD]]
[[Category: Liu, J]]
[[Category: Liu J]]
[[Category: Mayer, S]]
[[Category: Mayer S]]
[[Category: Melnick, A]]
[[Category: Melnick A]]
[[Category: Prive, G G]]
[[Category: Prive GG]]
[[Category: B-cell lymphoma]]
[[Category: Btb domain]]
[[Category: Hdac complex]]
[[Category: Transcription]]
[[Category: Transcriptional repression]]
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