3oyz

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Haloferax volcanii Malate Synthase Pyruvate/Acetyl-CoA Ternary Complex

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 <StructureSection load='3oyz' size='340' side='right'caption='[[3oyz]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3oyz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haloferax_volcanii Haloferax volcanii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OYZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OYZ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3oyz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haloferax_volcanii_DS2 Haloferax volcanii DS2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OYZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OYZ 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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=PYR:PYRUVIC+ACID'>PYR</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3oyx|3oyx]], [[3pug|3pug]]</div></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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=PYR:PYRUVIC+ACID'>PYR</scene></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Malate_synthase Malate synthase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.3.9 2.3.3.9] </span></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=3oyz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oyz OCA], [https://pdbe.org/3oyz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3oyz RCSB], [https://www.ebi.ac.uk/pdbsum/3oyz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3oyz ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/ACEB_HALVD ACEB_HALVD]] Involved in the glyoxylate cycle which synthesizes precursors for carbohydrates from C2 compounds such as acetate. Catalyzes the Claisen condensation between acetyl-coenzyme A (acetyl-CoA) and glyoxylate to form the malyl-CoA intermediate that is subsequently hydrolyzed to produce malate and CoA.<ref>PMID:11513957</ref> <ref>PMID:21569248</ref> <ref>PMID:9738442</ref>
+[https://www.uniprot.org/uniprot/ACEB_HALVD ACEB_HALVD] Involved in the glyoxylate cycle which synthesizes precursors for carbohydrates from C2 compounds such as acetate. Catalyzes the Claisen condensation between acetyl-coenzyme A (acetyl-CoA) and glyoxylate to form the malyl-CoA intermediate that is subsequently hydrolyzed to produce malate and CoA.<ref>PMID:11513957</ref> <ref>PMID:21569248</ref> <ref>PMID:9738442</ref>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-ABSTRACT: BACKGROUND: Malate synthase, one of the two enzymes unique to the glyoxylate cycle, is found in all three domains of life, and is crucial to the utilization of two-carbon compounds for net biosynthetic pathways such as gluconeogenesis. In addition to the main isoforms A and G, so named because of their differential expression in E. coli grown on either acetate or glycolate respectively, a third distinct isoform has been identified. These three isoforms differ considerably in size and sequence conservation. The A isoform (MSA) comprises ~530 residues, the G isoform (MSG) is ~730 residues, and this third isoform (MSH- halophilic) is ~430 residues in length. Both isoforms A and G have been structurally characterized in detail, but no structures have been reported for the H isoform which has been found thus far only in members of the halophilic Archaea. RESULTS: We have solved the structure of a malate synthase H (MSH) isoform member from Haloferax volcanii in complex with glyoxylate at 2.51 angstrom resolution, and also as a ternary complex with acetyl-coenzyme A and pyruvate at 1.95 angstroms. Like the A and G isoforms, MSH is based on a beta8/alpha8 (TIM) barrel. Unlike previously solved malate synthase structures which are all monomeric, this enzyme is found in the native state as a trimer/hexamer equilibrium. Compared to isoforms A and G, MSH displays deletion of an N-terminal domain and a smaller deletion at the C-terminus. The MSH active site is closely superimposable with those of MSA and MSG, with the ternary complex indicating a nucleophilic attack on pyruvate by the enolate intermediate of acetyl-coenzyme A. CONCLUSIONS: The reported structures of MSH from Haloferax volcanii allow a detailed analysis and comparison with previously solved structures of isoforms A and G. These structural comparisons provide insight into evolutionary relationships among these isoforms, and also indicate that despite the size and sequence variation, and the truncated C-terminal domain of the H isoform, the catalytic mechanism is conserved. Sequence analysis in light of the structure indicates that additional members of isoform H likely exist in the databases but have been misannotated.
-Crystal structures of a halophilic archaeal malate synthase from Haloferax volcanii and comparisons with isoforms A and G.,Bracken CD, Neighbor AM, Lamlenn KK, Thomas GC, Schubert HL, Whitby FG, Howard BR BMC Struct Biol. 2011 May 10;11(1):23. PMID:21569248<ref>PMID:21569248</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 3oyz" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 27: / Line 17: @@
 __TOC__
 </StructureSection>
-[[Category: Haloferax volcanii]]
+[[Category: Haloferax volcanii DS2]]
 [[Category: Large Structures]]
-[[Category: Malate synthase]]
+[[Category: Bracken C]]
-[[Category: Bracken, C]]
+[[Category: Howard BR]]
-[[Category: Howard, B R]]
+[[Category: Lamlenn KK]]
-[[Category: Lamlenn, K K]]
+[[Category: Neighbor A]]
-[[Category: Neighbor, A]]
+[[Category: Schubert HL]]
-[[Category: Schubert, H L]]
+[[Category: Thomas G]]
-[[Category: Thomas, G]]
+[[Category: Whitby FG]]
-[[Category: Whitby, F G]]
-[[Category: Tim barrel]]
-[[Category: Transferase]]

3oyz

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Haloferax volcanii Malate Synthase Pyruvate/Acetyl-CoA Ternary Complex

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