View source for 1efl


==HUMAN MALIC ENZYME IN A QUATERNARY COMPLEX WITH NAD, MG, AND TARTRONATE==
<StructureSection load='1efl' size='340' side='right'caption='[[1efl]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1efl]] 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=1EFL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EFL 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]] 2.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=TTN:TARTRONATE'>TTN</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=1efl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1efl OCA], [https://pdbe.org/1efl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1efl RCSB], [https://www.ebi.ac.uk/pdbsum/1efl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1efl ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MAOM_HUMAN MAOM_HUMAN] 
== 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/ef/1efl_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=1efl ConSurf].
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== Publication Abstract from PubMed ==
Malic enzymes are widely distributed in nature and have many biological functions. The crystal structure of human mitochondrial NAD(P)+-dependent malic enzyme in a quaternary complex with NAD+, Mn++ and oxalate has been determined at 2.2 A resolution. The structures of the quaternary complex with NAD+, Mg++, tartronate or ketomalonate have been determined at 2.6 A resolution. The structures show the enzyme in a closed form in these complexes and reveal the binding modes of the cation and the inhibitors. The divalent cation is coordinated in an octahedral fashion by six ligating oxygens, two from the substrate/inhibitor, three from Glu 255, Asp 256 and Asp 279 of the enzyme, and one from a water molecule. The structural information has significant implications for the catalytic mechanism of malic enzymes and identifies Tyr 112 and Lys 183 as possible catalytic residues. Changes in tetramer organization of the enzyme are also observed in these complexes, which might be relevant for its cooperative behavior and allosteric control.

Structure of a closed form of human malic enzyme and implications for catalytic mechanism.,Yang Z, Floyd DL, Loeber G, Tong L Nat Struct Biol. 2000 Mar;7(3):251-7. PMID:10700286<ref>PMID:10700286</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 1efl" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Floyd DL]]
[[Category: Loeber G]]
[[Category: Tong L]]
[[Category: Yang Z]]