Galkin 2006 Biochim Biophys Acta: Difference between revisions
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{{Publication | {{Publication | ||
|title=Galkin A, DrΓΆse S, Brandt U (2006) The proton pumping stoichiometry of purified mitochondrial | |title=Galkin A, DrΓΆse S, Brandt U (2006) The proton pumping stoichiometry of purified mitochondrial Complex I reconstituted into proteoliposomes. Biochim Biophys Acta 1757:1575-81. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/17094937 PMID: 17094937 Open Access] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/17094937 PMID: 17094937 Open Access] | ||
|authors=Galkin A, Droese S, Brandt U | |authors=Galkin A, Droese S, Brandt U | ||
|year=2006 | |year=2006 | ||
|journal=Biochim Biophys Acta | |journal=Biochim Biophys Acta | ||
|abstract=NADH:ubiquinone oxidoreductase (Complex I) is the largest and most complicated enzyme of aerobic electron transfer. The mechanism how it uses redox energy to pump protons across the bioenergetic membrane is still not understood. Here we determined the pumping stoichiometry of mitochondrial Complex I from the strictly aerobic yeast ''Yarrowia lipolytica''. With intact mitochondria, the measured value of | |abstract=NADH:ubiquinone oxidoreductase (Complex I) is the largest and most complicated enzyme of aerobic electron transfer. The mechanism how it uses redox energy to pump protons across the bioenergetic membrane is still not understood. Here we determined the pumping stoichiometry of mitochondrial Complex I from the strictly aerobic yeast ''Yarrowia lipolytica''. With intact mitochondria, the measured value of the 3.8 H<sup>+</sup>/2 Δ indicated that four protons are pumped per NADH oxidized. For purified Complex I reconstituted into proteoliposomes we measured a very similar pumping stoichiometry of 3.6 H<sup>+</sup>/2 Δ. This is the first demonstration that the proton pump of Complex I stayed fully functional after purification of the enzyme. | ||
|keywords=Complex I, NADH:ubiquinone oxidoreductase, Proton pump, Energy transduction, Mitochondria, Proteoliposome, ''Yarrowia lipolytica'' | |keywords=Complex I, NADH:ubiquinone oxidoreductase, Proton pump, Energy transduction, Mitochondria, Proteoliposome, ''Yarrowia lipolytica'' | ||
|mipnetlab= | |mipnetlab=NL Nijmegen Brandt U, DE Frankfurt Droese S, UK Belfast Galkin A, US NY New York Galkin A | ||
|discipline=Mitochondrial Physiology | |discipline=Mitochondrial Physiology | ||
}} | }} | ||
{{Labeling | {{Labeling | ||
|area=Respiration | |area=Respiration | ||
| | |organism=Fungi | ||
|preparations=Isolated mitochondria | |preparations=Isolated mitochondria | ||
|enzymes=Complex I | |enzymes=Complex I |
Latest revision as of 14:50, 28 March 2018
Galkin A, DrΓΆse S, Brandt U (2006) The proton pumping stoichiometry of purified mitochondrial Complex I reconstituted into proteoliposomes. Biochim Biophys Acta 1757:1575-81. |
Galkin A, Droese S, Brandt U (2006) Biochim Biophys Acta
Abstract: NADH:ubiquinone oxidoreductase (Complex I) is the largest and most complicated enzyme of aerobic electron transfer. The mechanism how it uses redox energy to pump protons across the bioenergetic membrane is still not understood. Here we determined the pumping stoichiometry of mitochondrial Complex I from the strictly aerobic yeast Yarrowia lipolytica. With intact mitochondria, the measured value of the 3.8 H+/2 Δ indicated that four protons are pumped per NADH oxidized. For purified Complex I reconstituted into proteoliposomes we measured a very similar pumping stoichiometry of 3.6 H+/2 Δ. This is the first demonstration that the proton pump of Complex I stayed fully functional after purification of the enzyme. β’ Keywords: Complex I, NADH:ubiquinone oxidoreductase, Proton pump, Energy transduction, Mitochondria, Proteoliposome, Yarrowia lipolytica
β’ O2k-Network Lab: NL Nijmegen Brandt U, DE Frankfurt Droese S, UK Belfast Galkin A, US NY New York Galkin A
Labels: MiParea: Respiration
Organism: Fungi
Preparation: Isolated mitochondria Enzyme: Complex I
Coupling state: OXPHOS
HRR: Oxygraph-2k