1fft: Difference between revisions

Latest revision as of 05:56, 13 August 2026

The structure of ubiquinol oxidase from Escherichia coli

Structural highlights

1fft is a 8 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.5Å
Ligands:	CU, HEM, HEO
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CYOB_ECOLI Cytochrome bo(3) ubiquinol terminal oxidase is the component of the aerobic respiratory chain of E.coli that predominates when cells are grown at high aeration. Has proton pump activity across the membrane in addition to electron transfer, pumping 2 protons/electron. Protons are probably pumped via D- and K- channels found in this subunit (PubMed:11017202).^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Cell respiration is catalyzed by the heme-copper oxidase superfamily of enzymes, which comprises cytochrome c and ubiquinol oxidases. These membrane proteins utilize different electron donors through dissimilar access mechanisms. We report here the first structure of a ubiquinol oxidase, cytochrome bo3, from Escherichia coli. The overall structure of the enzyme is similar to those of cytochrome c oxidases; however, the membrane-spanning region of subunit I contains a cluster of polar residues exposed to the interior of the lipid bilayer that is not present in the cytochrome c oxidase. Mutagenesis studies on these residues strongly suggest that this region forms a quinone binding site. A sequence comparison of this region with known quinone binding sites in other membrane proteins shows remarkable similarities. In light of these findings we suggest specific roles for these polar residues in electron and proton transfer in ubiquinol oxidase.

The structure of the ubiquinol oxidase from Escherichia coli and its ubiquinone binding site.,Abramson J, Riistama S, Larsson G, Jasaitis A, Svensson-Ek M, Laakkonen L, Puustinen A, Iwata S, Wikstrom M Nat Struct Biol. 2000 Oct;7(10):910-7. PMID:11017202^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Matsushita K, Patel L, Gennis RB, Kaback HR. Reconstitution of active transport in proteoliposomes containing cytochrome o oxidase and lac carrier protein purified from Escherichia coli. Proc Natl Acad Sci U S A. 1983 Aug;80(16):4889-93. PMID:6308657
↑ Bekker M, de Vries S, Ter Beek A, Hellingwerf KJ, de Mattos MJ. Respiration of Escherichia coli can be fully uncoupled via the nonelectrogenic terminal cytochrome bd-II oxidase. J Bacteriol. 2009 Sep;191(17):5510-7. doi: 10.1128/JB.00562-09. Epub 2009 Jun 19. PMID:19542282 doi:https://dx.doi.org/10.1128/JB.00562-09
↑ Sharma P, Hellingwerf KJ, de Mattos MJ, Bekker M. Uncoupling of substrate-level phosphorylation in Escherichia coli during glucose-limited growth. Appl Environ Microbiol. 2012 Oct;78(19):6908-13. doi: 10.1128/AEM.01507-12. Epub , 2012 Jul 27. PMID:22843529 doi:https://dx.doi.org/10.1128/AEM.01507-12
↑ Abramson J, Riistama S, Larsson G, Jasaitis A, Svensson-Ek M, Laakkonen L, Puustinen A, Iwata S, Wikstrom M. The structure of the ubiquinol oxidase from Escherichia coli and its ubiquinone binding site. Nat Struct Biol. 2000 Oct;7(10):910-7. PMID:11017202 doi:10.1038/82824

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Matsushita K, Patel L, Gennis RB, Kaback HR. Reconstitution of active transport in proteoliposomes containing cytochrome o oxidase and lac carrier protein purified from Escherichia coli. Proc Natl Acad Sci U S A. 1983 Aug;80(16):4889-93. PMID:6308657

[2] Bekker M, de Vries S, Ter Beek A, Hellingwerf KJ, de Mattos MJ. Respiration of Escherichia coli can be fully uncoupled via the nonelectrogenic terminal cytochrome bd-II oxidase. J Bacteriol. 2009 Sep;191(17):5510-7. doi: 10.1128/JB.00562-09. Epub 2009 Jun 19. PMID:19542282 doi:https://dx.doi.org/10.1128/JB.00562-09

[3] Sharma P, Hellingwerf KJ, de Mattos MJ, Bekker M. Uncoupling of substrate-level phosphorylation in Escherichia coli during glucose-limited growth. Appl Environ Microbiol. 2012 Oct;78(19):6908-13. doi: 10.1128/AEM.01507-12. Epub , 2012 Jul 27. PMID:22843529 doi:https://dx.doi.org/10.1128/AEM.01507-12

[4] Abramson J, Riistama S, Larsson G, Jasaitis A, Svensson-Ek M, Laakkonen L, Puustinen A, Iwata S, Wikstrom M. The structure of the ubiquinol oxidase from Escherichia coli and its ubiquinone binding site. Nat Struct Biol. 2000 Oct;7(10):910-7. PMID:11017202 doi:10.1038/82824

[1]

[2]

[3]

[4]

@@ Line 3: / Line 3: @@
 <StructureSection load='1fft' size='340' side='right'caption='[[1fft]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1fft]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FFT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FFT FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1fft]] is a 8 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=1FFT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FFT 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>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=HEO:HEME+O'>HEO</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]] 3.5&#8491;</td></tr>
-<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></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>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=HEO:HEME+O'>HEO</scene></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=1fft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fft OCA], [http://pdbe.org/1fft PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1fft RCSB], [http://www.ebi.ac.uk/pdbsum/1fft PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1fft 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=1fft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fft OCA], [https://pdbe.org/1fft PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fft RCSB], [https://www.ebi.ac.uk/pdbsum/1fft PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fft ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/CYOB_ECOLI CYOB_ECOLI]] Cytochrome bo(3) ubiquinol terminal oxidase is the component of the aerobic respiratory chain of E.coli that predominates when cells are grown at high aeration. Has proton pump activity across the membrane in addition to electron transfer, pumping 2 protons/electron. Protons are probably pumped via D- and K- channels found in this subunit (PubMed:11017202).<ref>PMID:6308657</ref> <ref>PMID:19542282</ref> <ref>PMID:22843529</ref>  [[http://www.uniprot.org/uniprot/CYOC_ECOLI CYOC_ECOLI]] Cytochrome bo(3) ubiquinol terminal oxidase is the component of the aerobic respiratory chain of E.coli that predominates when cells are grown at high aeration. Has proton pump activity across the membrane in addition to electron transfer, pumping 2 protons/electron.<ref>PMID:6308657</ref> <ref>PMID:19542282</ref> <ref>PMID:22843529</ref>  [[http://www.uniprot.org/uniprot/CYOA_ECOLI CYOA_ECOLI]] Cytochrome bo(3) ubiquinol terminal oxidase is the component of the aerobic respiratory chain of E.coli that predominates when cells are grown at high aeration. Has proton pump activity across the membrane in addition to electron transfer, pumping 2 protons/electron.<ref>PMID:6308657</ref> <ref>PMID:19542282</ref> <ref>PMID:22843529</ref>
+[https://www.uniprot.org/uniprot/CYOB_ECOLI CYOB_ECOLI] Cytochrome bo(3) ubiquinol terminal oxidase is the component of the aerobic respiratory chain of E.coli that predominates when cells are grown at high aeration. Has proton pump activity across the membrane in addition to electron transfer, pumping 2 protons/electron. Protons are probably pumped via D- and K- channels found in this subunit (PubMed:11017202).<ref>PMID:6308657</ref> <ref>PMID:19542282</ref> <ref>PMID:22843529</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 15: / Line 15: @@
    <jmolCheckbox>
      <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ff/1fft_consurf.spt"</scriptWhenChecked>
-     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
      <text>to colour the structure by Evolutionary Conservation</text>
    </jmolCheckbox>
@@ Line 33: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus coli migula 1895]]
+[[Category: Escherichia coli]]
 [[Category: Large Structures]]
-[[Category: Abramson, J]]
+[[Category: Abramson J]]
-[[Category: Iwata, S]]
+[[Category: Iwata S]]
-[[Category: Jasaitis, A]]
+[[Category: Jasaitis A]]
-[[Category: Larsson, G]]
+[[Category: Larsson G]]
-[[Category: Puustinen, A]]
+[[Category: Puustinen A]]
-[[Category: Riistama, S]]
+[[Category: Riistama S]]
-[[Category: Svensson-Ek, M]]
+[[Category: Svensson-Ek M]]
-[[Category: Wikstrom, M]]
+[[Category: Wikstrom M]]
-[[Category: Cytochrome oxidase]]
-[[Category: Electron transport]]
-[[Category: Membrane protein]]
-[[Category: Oxidoreductase]]

1fft: Difference between revisions

Latest revision as of 05:56, 13 August 2026

The structure of ubiquinol oxidase from Escherichia coli

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

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