2hjh
From Proteopedia
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| - | [[Image:2hjh.png|left|200px]] | ||
| - | + | ==Crystal Structure of the Sir2 deacetylase== | |
| - | + | <StructureSection load='2hjh' size='340' side='right'caption='[[2hjh]], [[Resolution|resolution]] 1.85Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[2hjh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HJH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HJH 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]] 1.85Å</td></tr> | |
| - | == | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=NCA:NICOTINAMIDE'>NCA</scene>, <scene name='pdbligand=XYQ:(2R,3R,4S,5R)-5-({[(R)-{[(R)-{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methoxy}(hydroxy)phosphoryl]oxy}(hydroxy)phosphoryl]oxy}methyl)-3,4-dihydroxytetrahydrofuran-2-yl+acetate+(non-preferred+name)'>XYQ</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | [[2hjh]] is a 2 chain structure with sequence from [ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2hjh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hjh OCA], [https://pdbe.org/2hjh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hjh RCSB], [https://www.ebi.ac.uk/pdbsum/2hjh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hjh ProSAT]</span></td></tr> |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/SIR2_YEAST SIR2_YEAST] NAD-dependent deacetylase, which participates in a wide range of cellular events including chromosome silencing, chromosome segregation, DNA recombination and the determination of life span. Involved in transcriptional repression of the silent mating-type loci HML and HMR and telomeric silencing via its association with SIR3 and SIR4. Plays a central role in ribosomal DNA (rDNA) silencing via its association with the RENT complex, preventing hyperrecombination, and repressing transcription from foreign promoters, which contributes to extending life span. Probably represses transcription via the formation of heterochromatin structure, which involves the compaction of chromatin fiber into a more condensed form, although this complex in at least one case can still bind euchromatic levels of positive transcription regulators. Although it displays some NAD-dependent histone deacetylase activity on histone H3K9Ac and H3K14Ac and histone H4K16Ac in vitro, such activity is unclear in vivo and may not be essential.<ref>PMID:10619427</ref> <ref>PMID:10693811</ref> <ref>PMID:9278054</ref> <ref>PMID:12923057</ref> <ref>PMID:15274642</ref> <ref>PMID:18086879</ref> <ref>PMID:19220062</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/hj/2hjh_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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/main_output.php?pdb_ID=2hjh ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
==See Also== | ==See Also== | ||
| - | *[[Histone deacetylase|Histone deacetylase]] | + | *[[Histone deacetylase 3D structures|Histone deacetylase 3D structures]] |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
| - | [[Category: Ellenberger | + | [[Category: Ellenberger TE]] |
| - | [[Category: Hall | + | [[Category: Hall BE]] |
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Current revision
Crystal Structure of the Sir2 deacetylase
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