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==Crystal structure of a new type of NADPH-dependent quinone oxidoreductase (QOR2) from escherichia coli==
==Crystal structure of a new type of NADPH-dependent quinone oxidoreductase (QOR2) from escherichia coli==
<StructureSection load='2zcu' size='340' side='right' caption='[[2zcu]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='2zcu' size='340' side='right'caption='[[2zcu]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2zcu]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZCU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZCU FirstGlance]. <br>
<table><tr><td colspan='2'>[[2zcu]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZCU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ZCU FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</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]] 1.8&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2zcv|2zcv]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/NADPH:quinone_reductase NADPH:quinone reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.6.5.5 1.6.5.5] </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=2zcu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zcu OCA], [https://pdbe.org/2zcu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2zcu RCSB], [https://www.ebi.ac.uk/pdbsum/2zcu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2zcu ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2zcu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zcu OCA], [http://pdbe.org/2zcu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zcu RCSB], [http://www.ebi.ac.uk/pdbsum/2zcu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2zcu ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/QOR2_ECOLI QOR2_ECOLI]] Quinone oxidoreductase that may play some additional role beyond quinone reduction. Potential redox sensor protein. Overexpression induces retardation of growth.  
[https://www.uniprot.org/uniprot/QOR2_ECOLI QOR2_ECOLI] Quinone oxidoreductase that may play some additional role beyond quinone reduction. Potential redox sensor protein. Overexpression induces retardation of growth.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zc/2zcu_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zc/2zcu_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
Line 21: Line 20:
</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=2zcu ConSurf].
</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=2zcu ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Escherichia coli QOR2 [NAD(P)H-dependent quinone oxidoreductase; a ytfG gene product], which catalyzes two-electron reduction of methyl-1,4-benzoquinone, is a new type of quinone-reducing enzyme with distinct primary sequence and oligomeric conformation from previously known quinone oxidoreductases. The crystal structures of native QOR2 and the QOR2-NADPH (nicotinamide adenine dinucleotide phosphate, reduced form) complex reveal that QOR2 consists of two domains (N-domain and C-domain) resembling those of NmrA, a negative transcriptional regulator that belongs to the short-chain dehydrogenase/reductase family. The N-domain, which adopts the Rossmann fold, provides a platform for NADPH binding, whereas the C-domain, which contains a hydrophobic pocket connected to the NADPH-binding site, appears to play important roles in substrate binding. Asn143 near the NADPH-binding site has been identified to be involved in substrate binding and catalysis from structural and mutational analyses. Moreover, compared with wild-type strain, the qor2-overexpressing strain shows growth retardation and remarkable decrease in several enzymes involved in carbon metabolism, suggesting that QOR2 could play some physiological roles in addition to quinone reduction.
Crystal structure of a new type of NADPH-dependent quinone oxidoreductase (QOR2) from Escherichia coli.,Kim IK, Yim HS, Kim MK, Kim DW, Kim YM, Cha SS, Kang SO J Mol Biol. 2008 May 30;379(2):372-84. Epub 2008 Apr 8. PMID:18455185<ref>PMID:18455185</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2zcu" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: NADPH:quinone reductase]]
[[Category: Large Structures]]
[[Category: Cha, S S]]
[[Category: Cha SS]]
[[Category: Kang, S O]]
[[Category: Kang SO]]
[[Category: Kim, D W]]
[[Category: Kim DW]]
[[Category: Kim, I K]]
[[Category: Kim IK]]
[[Category: Kim, M K]]
[[Category: Kim MK]]
[[Category: Kim, Y M]]
[[Category: Kim YM]]
[[Category: Yim, H S]]
[[Category: Yim HS]]
[[Category: Alpha-beta sandwich]]
[[Category: Oxidoreductase]]

Latest revision as of 13:57, 13 March 2024

Crystal structure of a new type of NADPH-dependent quinone oxidoreductase (QOR2) from escherichia coli

2zcu, resolution 1.80Å

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