1qo8

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[[Image:1qo8.gif|left|200px]]<br /><applet load="1qo8" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1qo8, resolution 2.15&Aring;" />
 
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'''THE STRUCTURE OF THE OPEN CONFORMATION OF A FLAVOCYTOCHROME C3 FUMARATE REDUCTASE'''<br />
 
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==Overview==
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==The structure of the open conformation of a flavocytochrome c3 fumarate reductase==
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Fumarate reductases and succinate dehydrogenases play central roles in the, metabolism of eukaryotic and prokaryotic cells. A recent medium resolution, structure of the Escherichia coli fumarate reductase (Frd) has revealed, the overall organization of the membrane-bound complex. Here we present, the first high resolution X-ray crystal structure of a water-soluble, bacterial fumarate reductase in an open conformation. This structure, reveals a mobile domain that modulates substrate access to the active site, and provides new insights into the mechanism of this widespread and, important family of FAD-containing respiratory proteins.
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<StructureSection load='1qo8' size='340' side='right'caption='[[1qo8]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1qo8]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Shewanella_frigidimarina Shewanella frigidimarina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QO8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QO8 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.15&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qo8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qo8 OCA], [https://pdbe.org/1qo8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qo8 RCSB], [https://www.ebi.ac.uk/pdbsum/1qo8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qo8 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/FRD2_SHEFN FRD2_SHEFN] Catalyzes unidirectional fumarate reduction using artificial electron donors such as methyl viologen. The physiological reductant is unknown.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qo/1qo8_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1qo8 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Fumarate reductases and succinate dehydrogenases play central roles in the metabolism of eukaryotic and prokaryotic cells. A recent medium resolution structure of the Escherichia coli fumarate reductase (Frd) has revealed the overall organization of the membrane-bound complex. Here we present the first high resolution X-ray crystal structure of a water-soluble bacterial fumarate reductase in an open conformation. This structure reveals a mobile domain that modulates substrate access to the active site and provides new insights into the mechanism of this widespread and important family of FAD-containing respiratory proteins.
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==About this Structure==
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Open conformation of a flavocytochrome c3 fumarate reductase.,Bamford V, Dobbin PS, Richardson DJ, Hemmings AM Nat Struct Biol. 1999 Dec;6(12):1104-7. PMID:10581549<ref>PMID:10581549</ref>
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1QO8 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Shewanella_frigidimarina Shewanella frigidimarina] with HEM and FAD as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Succinate_dehydrogenase Succinate dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.99.1 1.3.99.1] Known structural/functional Sites: <scene name='pdbsite=AC1:Hem Binding Site For Resdiue A601'>AC1</scene>, <scene name='pdbsite=AC2:Hem Binding Site For Resdiue A602'>AC2</scene>, <scene name='pdbsite=AC3:Hem Binding Site For Resdiue A603'>AC3</scene>, <scene name='pdbsite=AC4:Hem Binding Site For Resdiue A604'>AC4</scene>, <scene name='pdbsite=AC5:Fad Binding Site For Resdiue A605'>AC5</scene>, <scene name='pdbsite=AC6:Hem Binding Site For Resdiue D601'>AC6</scene>, <scene name='pdbsite=AC7:Hem Binding Site For Resdiue D602'>AC7</scene>, <scene name='pdbsite=AC8:Hem Binding Site For Residue D603'>AC8</scene>, <scene name='pdbsite=AC9:Hem Binding Site For Residue D604'>AC9</scene> and <scene name='pdbsite=BC1:Fad Binding Site For Residue D605'>BC1</scene>. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1QO8 OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Open conformation of a flavocytochrome c3 fumarate reductase., Bamford V, Dobbin PS, Richardson DJ, Hemmings AM, Nat Struct Biol. 1999 Dec;6(12):1104-7. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10581549 10581549]
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</div>
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[[Category: Shewanella frigidimarina]]
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<div class="pdbe-citations 1qo8" style="background-color:#fffaf0;"></div>
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[[Category: Single protein]]
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[[Category: Succinate dehydrogenase]]
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[[Category: Bamford, V.]]
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[[Category: Dobbin, P.S.]]
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[[Category: Hemmings, A.M.]]
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[[Category: Richardson, D.J.]]
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[[Category: FAD]]
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[[Category: HEM]]
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[[Category: oxidoreductase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Dec 18 17:58:25 2007''
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==See Also==
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*[[Flavocytochrome 3D structures|Flavocytochrome 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Shewanella frigidimarina]]
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[[Category: Bamford V]]
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[[Category: Dobbin PS]]
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[[Category: Hemmings AM]]
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[[Category: Richardson DJ]]

Current revision

The structure of the open conformation of a flavocytochrome c3 fumarate reductase

PDB ID 1qo8

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