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<table><tr><td colspan='2'>[[6saq]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aquifex_aeolicus_VF5 Aquifex aeolicus VF5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SAQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SAQ FirstGlance]. <br>
<table><tr><td colspan='2'>[[6saq]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aquifex_aeolicus_VF5 Aquifex aeolicus VF5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SAQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SAQ 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]] 2.02&#8491;</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]] 2.02&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=L3W:[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]+[(2~{R},3~{S},4~{R},5~{R})-5-[[(1~{E},3~{Z})-5-azanyl-4-oxidanyl-5-oxidanylidene-penta-1,3-dienyl]-methanoyl-amino]-3,4-bis(oxidanyl)oxolan-2-yl]methyl+hydrogen+phosphate'>L3W</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=L3W:[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl]+[(2~{R},3~{S},4~{R},5~{R})-5-[[(1~{E},3~{Z})-5-azanyl-4-oxidanyl-5-oxidanylidene-penta-1,3-dienyl]-methanoyl-amino]-3,4-bis(oxidanyl)oxolan-2-yl]methyl+hydrogen+phosphate'>L3W</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=6saq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6saq OCA], [https://pdbe.org/6saq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6saq RCSB], [https://www.ebi.ac.uk/pdbsum/6saq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6saq ProSAT]</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=6saq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6saq OCA], [https://pdbe.org/6saq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6saq RCSB], [https://www.ebi.ac.uk/pdbsum/6saq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6saq ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/NUOE_AQUAE NUOE_AQUAE] NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient (By similarity).
[https://www.uniprot.org/uniprot/NUOE_AQUAE NUOE_AQUAE] NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
NADH:ubiquinone oxidoreductase, respiratory complex I, plays a central role in cellular energy metabolism. As a major source of reactive oxygen species (ROS) it affects ageing and mitochondrial dysfunction. The novel inhibitor NADH-OH specifically blocks NADH oxidation and ROS production by complex I in nanomolar concentrations. Attempts to elucidate its structure by NMR spectroscopy have failed. Here, by using X-ray crystallographic analysis, we report the structure of NADH-OH bound in the active site of a soluble fragment of complex I at 2.0 A resolution. We have identified key amino acid residues that are specific and essential for binding NADH-OH. Furthermore, the structure sheds light on the specificity of NADH-OH towards the unique Rossmann-fold of complex I and indicates a regulatory role in mitochondrial ROS generation. In addition, NADH-OH acts as a lead-structure for the synthesis of a novel class of ROS suppressors.
Structural Basis for Inhibition of ROS-Producing Respiratory Complex I by NADH-OH.,Vranas M, Wohlwend D, Qiu D, Gerhardt S, Trncik C, Pervaiz M, Ritter K, Steimle S, Randazzo A, Einsle O, Gunther S, Jessen HJ, Kotlyar A, Friedrich T Angew Chem Int Ed Engl. 2021 Dec 20;60(52):27277-27281. doi: , 10.1002/anie.202112165. Epub 2021 Nov 15. PMID:34612584<ref>PMID:34612584</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6saq" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[NADH-quinone oxidoreductase|NADH-quinone oxidoreductase]]
*[[NADH-quinone oxidoreductase|NADH-quinone oxidoreductase]]
== References ==
<references/>
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</StructureSection>
</StructureSection>

Latest revision as of 18:36, 8 September 2026

wild-type NuoEF from Aquifex aeolicus bound to NADH-OH

6saq, resolution 2.02Å

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