2bqz

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[[Image:2bqz.png|left|200px]]
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==CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF THE HUMAN HISTONE METHYLTRANSFERASE PR-SET7 (ALSO KNOWN AS SET8)==
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<StructureSection load='2bqz' size='340' side='right' caption='[[2bqz]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2bqz]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BQZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BQZ FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene><br>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MLZ:N-METHYL-LYSINE'>MLZ</scene></td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histone-lysine_N-methyltransferase Histone-lysine N-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.43 2.1.1.43] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2bqz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bqz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2bqz RCSB], [http://www.ebi.ac.uk/pdbsum/2bqz PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bq/2bqz_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Methylation of lysine residues of histones is an important epigenetic mark that correlates with functionally distinct regions of chromatin. We present here the crystal structure of a ternary complex of the enzyme Pr-Set7 (also known as Set8) that methylates Lys 20 of histone H4 (H4-K20). We show that the enzyme is exclusively a mono-methylase and is therefore responsible for a signaling role quite distinct from that established by other enzymes that target this histone residue. We provide evidence from NMR for the C-flanking domains of SET proteins becoming ordered upon addition of AdoMet cofactor and develop a model for the catalytic cycle of these enzymes. The crystal structure reveals the basis of the specificity of the enzyme for H4-K20 because a histidine residue within the substrate, close to the target lysine, is required for completion of the active site. We also show how a highly variable component of the SET domain is responsible for many of the enzymes' interactions with its target histone peptide and probably also how this part of the structure ensures that Pr-Set7 is nucleosome specific.
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{{STRUCTURE_2bqz| PDB=2bqz | SCENE= }}
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Specificity and mechanism of the histone methyltransferase Pr-Set7.,Xiao B, Jing C, Kelly G, Walker PA, Muskett FW, Frenkiel TA, Martin SR, Sarma K, Reinberg D, Gamblin SJ, Wilson JR Genes Dev. 2005 Jun 15;19(12):1444-54. Epub 2005 Jun 2. PMID:15933069<ref>PMID:15933069</ref>
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===CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF THE HUMAN HISTONE METHYLTRANSFERASE PR-SET7 (ALSO KNOWN AS SET8)===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_15933069}}
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==About this Structure==
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[[2bqz]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BQZ OCA].
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==See Also==
==See Also==
*[[Histone methyltransferase|Histone methyltransferase]]
*[[Histone methyltransferase|Histone methyltransferase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015933069</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Histone-lysine N-methyltransferase]]
[[Category: Histone-lysine N-methyltransferase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]

Revision as of 10:20, 29 September 2014

CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF THE HUMAN HISTONE METHYLTRANSFERASE PR-SET7 (ALSO KNOWN AS SET8)

2bqz, resolution 1.50Å

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