8g1f: Difference between revisions
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==Structure of ACLY-D1026A-products== | |||
<StructureSection load='8g1f' size='340' side='right'caption='[[8g1f]], [[Resolution|resolution]] 2.40Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8g1f]] 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=8G1F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8G1F FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACO:ACETYL+COENZYME+*A'>ACO</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=OAA:OXALOACETATE+ION'>OAA</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=Q5B:(3S)-citryl-Coenzyme+A'>Q5B</scene>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</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=8g1f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8g1f OCA], [https://pdbe.org/8g1f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8g1f RCSB], [https://www.ebi.ac.uk/pdbsum/8g1f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8g1f ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/ACLY_HUMAN ACLY_HUMAN] ATP citrate-lyase is the primary enzyme responsible for the synthesis of cytosolic acetyl-CoA in many tissues. Has a central role in de novo lipid synthesis. In nervous tissue it may be involved in the biosynthesis of acetylcholine.<ref>PMID:23932781</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
ATP citrate lyase (ACLY) is the predominant nucleocytosolic source of acetyl-CoA and is aberrantly regulated in many diseases making it an attractive therapeutic target. Structural studies of ACLY reveal a central homotetrameric core citrate synthase homology (CSH) module flanked by acyl-CoA synthetase homology (ASH) domains, with ATP and citrate binding the ASH domain and CoA binding the ASH-CSH interface to produce acetyl-CoA and oxaloacetate products. The specific catalytic role of the CSH module and an essential D1026A residue contained within it has been a matter of debate. Here, we report biochemical and structural analysis of an ACLY-D1026A mutant demonstrating that this mutant traps a (3S)-citryl-CoA intermediate in the ASH domain in a configuration that is incompatible with the formation of acetyl-CoA, is able to convert acetyl-CoA and OAA to (3S)-citryl-CoA in the ASH domain, and can load CoA and unload acetyl-CoA in the CSH module. Together, this data support an allosteric role for the CSH module in ACLY catalysis. | |||
Allosteric role of the citrate synthase homology domain of ATP citrate lyase.,Wei X, Schultz K, Pepper HL, Megill E, Vogt A, Snyder NW, Marmorstein R Nat Commun. 2023 Apr 19;14(1):2247. doi: 10.1038/s41467-023-37986-9. PMID:37076498<ref>PMID:37076498</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 8g1f" style="background-color:#fffaf0;"></div> | ||
[[Category: Marmorstein | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Marmorstein R]] | |||
[[Category: Wei X]] | |||
Revision as of 09:57, 10 May 2023
Structure of ACLY-D1026A-productsStructure of ACLY-D1026A-products
Structural highlights
FunctionACLY_HUMAN ATP citrate-lyase is the primary enzyme responsible for the synthesis of cytosolic acetyl-CoA in many tissues. Has a central role in de novo lipid synthesis. In nervous tissue it may be involved in the biosynthesis of acetylcholine.[1] Publication Abstract from PubMedATP citrate lyase (ACLY) is the predominant nucleocytosolic source of acetyl-CoA and is aberrantly regulated in many diseases making it an attractive therapeutic target. Structural studies of ACLY reveal a central homotetrameric core citrate synthase homology (CSH) module flanked by acyl-CoA synthetase homology (ASH) domains, with ATP and citrate binding the ASH domain and CoA binding the ASH-CSH interface to produce acetyl-CoA and oxaloacetate products. The specific catalytic role of the CSH module and an essential D1026A residue contained within it has been a matter of debate. Here, we report biochemical and structural analysis of an ACLY-D1026A mutant demonstrating that this mutant traps a (3S)-citryl-CoA intermediate in the ASH domain in a configuration that is incompatible with the formation of acetyl-CoA, is able to convert acetyl-CoA and OAA to (3S)-citryl-CoA in the ASH domain, and can load CoA and unload acetyl-CoA in the CSH module. Together, this data support an allosteric role for the CSH module in ACLY catalysis. Allosteric role of the citrate synthase homology domain of ATP citrate lyase.,Wei X, Schultz K, Pepper HL, Megill E, Vogt A, Snyder NW, Marmorstein R Nat Commun. 2023 Apr 19;14(1):2247. doi: 10.1038/s41467-023-37986-9. PMID:37076498[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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