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{{STRUCTURE_2ktb|  PDB=2ktb  |  SCENE=  }}
==Solution Structure of the Second Bromodomain of Human Polybromo in complex with an acetylated peptide from Histone 3==
===Solution Structure of the Second Bromodomain of Human Polybromo in complex with an acetylated peptide from Histone 3===
<StructureSection load='2ktb' size='340' side='right' caption='[[2ktb]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
{{ABSTRACT_PUBMED_20368734}}
== Structural highlights ==
<table><tr><td colspan='2'>[[2ktb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KTB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2KTB FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PB1, PBRM1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=2ktb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ktb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ktb RCSB], [http://www.ebi.ac.uk/pdbsum/2ktb PDBsum]</span></td></tr>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/PB1_HUMAN PB1_HUMAN]] Defects in PBRM1 are a cause of renal cell carcinoma (RCC) [MIM:[http://omim.org/entry/144700 144700]]. It is a heterogeneous group of sporadic or hereditary carcinoma derived from cells of the proximal renal tubular epithelium. It is subclassified into clear cell renal carcinoma (non-papillary carcinoma), papillary renal cell carcinoma, chromophobe renal cell carcinoma, collecting duct carcinoma with medullary carcinoma of the kidney, and unclassified renal cell carcinoma.<ref>PMID:21248752</ref> 
== Function ==
[[http://www.uniprot.org/uniprot/PB1_HUMAN PB1_HUMAN]] Involved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Acts as a negative regulator of cell proliferation.<ref>PMID:21248752</ref> 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kt/2ktb_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The Polybromo (PB) protein functions as a key component of the human PBAF chromatin remodeling complex in regulation of gene transcription. PB is made up of modular domains including six bromodomains that are known as acetyl-lysine binding domains. However, histone-binding specificity of the bromodomains of PB has remained elusive. In this study, we report biochemical characterization of all six PB bromodomains' binding to a suite of lysine-acetylated peptides derived from known acetylation sites on human core histones. We demonstrate that bromodomain 2 of PB preferentially recognizes acetylated lysine 14 of histone H3 (H3K14ac), a post-translational mark known for gene transcriptional activation. We further describe the molecular basis of the selective H3K14ac recognition of bromodomain 2 by solving the protein structures in both the free and bound forms using X-ray crystallography and NMR, respectively.


==Disease==
Structural insights into selective histone H3 recognition by the human Polybromo bromodomain 2.,Charlop-Powers Z, Zeng L, Zhang Q, Zhou MM Cell Res. 2010 May;20(5):529-38. Epub 2010 Apr 6. PMID:20368734<ref>PMID:20368734</ref>
[[http://www.uniprot.org/uniprot/PB1_HUMAN PB1_HUMAN]] Defects in PBRM1 are a cause of renal cell carcinoma (RCC) [MIM:[http://omim.org/entry/144700 144700]]. It is a heterogeneous group of sporadic or hereditary carcinoma derived from cells of the proximal renal tubular epithelium. It is subclassified into clear cell renal carcinoma (non-papillary carcinoma), papillary renal cell carcinoma, chromophobe renal cell carcinoma, collecting duct carcinoma with medullary carcinoma of the kidney, and unclassified renal cell carcinoma.<ref>PMID:21248752</ref>  


==Function==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[http://www.uniprot.org/uniprot/PB1_HUMAN PB1_HUMAN]] Involved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Acts as a negative regulator of cell proliferation.<ref>PMID:21248752</ref>  
</div>
 
== References ==
==About this Structure==
<references/>
[[2ktb]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KTB OCA].
__TOC__
 
</StructureSection>
==Reference==
<ref group="xtra">PMID:020368734</ref><references group="xtra"/><references/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Charlop-Powers, Z.]]
[[Category: Charlop-Powers, Z]]
[[Category: Zeng, L.]]
[[Category: Zeng, L]]
[[Category: Zhang, Q.]]
[[Category: Zhang, Q]]
[[Category: Bromodomain]]
[[Category: Bromodomain]]
[[Category: Chromatin regulator]]
[[Category: Chromatin regulator]]
Retrieved from "https://proteopedia.org/2ktb"