View source for 4fvt


==Human SIRT3 bound to Ac-ACS peptide and Carba-NAD==
<StructureSection load='4fvt' size='340' side='right'caption='[[4fvt]], [[Resolution|resolution]] 2.47&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4fvt]] is a 2 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=4FVT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FVT 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]] 2.47&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene>, <scene name='pdbligand=CNA:CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>CNA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=4fvt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fvt OCA], [https://pdbe.org/4fvt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fvt RCSB], [https://www.ebi.ac.uk/pdbsum/4fvt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fvt ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SIR3_HUMAN SIR3_HUMAN] NAD-dependent protein deacetylase. Activates mitochondrial target proteins, including ACSS1, IDH2 and GDH by deacetylating key lysine residues. Contributes to the regulation of the cellular energy metabolism. Important for regulating tissue-specific ATP levels.<ref>PMID:16788062</ref> <ref>PMID:18680753</ref> <ref>PMID:18794531</ref> <ref>PMID:19535340</ref> 
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== Publication Abstract from PubMed ==
Carba-NAD is a synthetic compound identical to NAD except for one substitution, where an oxygen atom adjacent to the anomeric linkage bearing nicotinamide is replaced with a methylene group. Because it is inert in nicotinamide displacement reactions, carba-NAD is an unreactive substrate analogue for NAD consuming enzymes. SIRT3 and SIRT5 are NAD consuming enzymes that are potential therapeutic targets for the treatment of metabolic diseases and cancers. We report an improved carba-NAD synthesis, including a pyrophosphate coupling method that proceeds in approximately 60% yield. We also disclose the x-ray crystal structures of the ternary complexes of SIRT3 and SIRT5 bound to a peptide substrate and carba-NAD. These x-ray crystal structures provide critical snapshots of the mechanism by which human sirtuins function as protein deacylation catalysts.

Synthesis of Carba-NAD and the Structures of Its Ternary Complexes with SIRT3 and SIRT5.,Szczepankiewicz BG, Dai H, Koppetsch KJ, Qian D, Jiang F, Mao C, Perni RB J Org Chem. 2012 Jul 31. PMID:22849721<ref>PMID:22849721</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 4fvt" style="background-color:#fffaf0;"></div>

==See Also==
*[[Histone deacetylase 3D structures|Histone deacetylase 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Dai H]]