5b3q: Difference between revisions
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The | ==Nqo5 of the trypsin-resistant fragment (1-134) in P63 form== | ||
<StructureSection load='5b3q' size='340' side='right'caption='[[5b3q]], [[Resolution|resolution]] 3.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5b3q]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5B3Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5B3Q 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]] 3.003Å</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=5b3q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5b3q OCA], [https://pdbe.org/5b3q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5b3q RCSB], [https://www.ebi.ac.uk/pdbsum/5b3q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5b3q ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/NQO5_THET8 NQO5_THET8] NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is menaquinone. 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 required for the synthesis of ATP. The nqo5 subunit may be involved in the stabilization of the complex.[HAMAP-Rule:MF_01357] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The subunits that comprise bacterial complex I (NADH:ubiquinone oxidoreductase) are also found in more complicated mitochondrial enzymes in eukaryotic organisms. Although the Nqo5 subunit is one of these conserved components and important for the formation of complex, it has been little studied. Here, we report structure analyses of isolated Nqo5 from Thermus thermophilus. Biochemical studies indicated that the C-terminal region following the 30-Kd subunit motif is disordered in the isolated state, while the remaining portion is already folded. Crystallographic studies of a trypsin-resistant fragment revealed detailed structural differences in the folded domain between the isolated and complexed states. | |||
Characterization of the Nqo5 subunit of bacterial complex I in the isolated state.,Hanazono Y, Takeda K, Miki K FEBS Open Bio. 2016 Jun 8;6(7):687-95. doi: 10.1002/2211-5463.12070. eCollection , 2016 Jul. PMID:27398308<ref>PMID:27398308</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 5b3q" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[NADH-quinone oxidoreductase|NADH-quinone oxidoreductase]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Thermus thermophilus HB8]] | |||
[[Category: Hanazono Y]] | |||
[[Category: Miki K]] | |||
[[Category: Takeda K]] | |||
Latest revision as of 18:59, 8 November 2023
Nqo5 of the trypsin-resistant fragment (1-134) in P63 formNqo5 of the trypsin-resistant fragment (1-134) in P63 form
Structural highlights
FunctionNQO5_THET8 NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is menaquinone. 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 required for the synthesis of ATP. The nqo5 subunit may be involved in the stabilization of the complex.[HAMAP-Rule:MF_01357] Publication Abstract from PubMedThe subunits that comprise bacterial complex I (NADH:ubiquinone oxidoreductase) are also found in more complicated mitochondrial enzymes in eukaryotic organisms. Although the Nqo5 subunit is one of these conserved components and important for the formation of complex, it has been little studied. Here, we report structure analyses of isolated Nqo5 from Thermus thermophilus. Biochemical studies indicated that the C-terminal region following the 30-Kd subunit motif is disordered in the isolated state, while the remaining portion is already folded. Crystallographic studies of a trypsin-resistant fragment revealed detailed structural differences in the folded domain between the isolated and complexed states. Characterization of the Nqo5 subunit of bacterial complex I in the isolated state.,Hanazono Y, Takeda K, Miki K FEBS Open Bio. 2016 Jun 8;6(7):687-95. doi: 10.1002/2211-5463.12070. eCollection , 2016 Jul. PMID:27398308[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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