Lapuente-Brun 2013 Science
| Lapuente-Brun E, Moreno-Loshuertos R, AcĂn-PĂ©rez R, Latorre-Pellicer A, ColĂĄs C, Balsa E, Perales-Clemente E, QuirĂłs PM, Calvo E, RodrĂguez-HernĂĄndez MA, Navas P, Cruz R, Carracedo Ă, LĂłpez-OtĂn C, PĂ©rez-Martos A, FernĂĄndez-Silva P, FernĂĄndez-Vizarra E, EnrĂquez JA (2013) Supercomplex assembly determines electron flux in the mitochondrial electron transport chain. Science 340: 1567-1570. |
Lapuente-Brun E, Moreno-Loshuertos R, AcĂn-Perez R, Latorre-Pellicer A, Colas C, Balsa E, Perales-Clemente E, Quiros PM, Calvo E, RodrĂguez-Hernandez MA, Navas P, Cruz R, Carracedo A, Lopez-Otin C, Perez-Martos A, Fernandez-Silva P, Fernandez-Vizarra E, Enriquez JA (2013) Science
Abstract: The textbook description of mitochondrial respiratory complexes (RCs) views them as free-moving entities linked by the mobile carriers coenzyme Q (CoQ) and cytochrome c (cyt c). This model (known as the fluid model) is challenged by the proposal that all RCs except Complex II can associate in supercomplexes (SCs). The proposed SCs are the respirasome (Complexes I, III, and IV), Complexes I and III, and Complexes III and IV. The role of SCs is unclear, and their existence is debated. By genetic modulation of interactions between Complexes I and III and III and IV, we show that these associations define dedicated CoQ and cyt c pools and that SC assembly is dynamic and organizes electron flux to optimize the use of available substrates.
Labels:
Enzyme: Complex I, Complex II; Succinate Dehydrogenase"Complex II; Succinate Dehydrogenase" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property., Complex III, Complex IV; Cytochrome c Oxidase"Complex IV; Cytochrome c Oxidase" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property. Regulation: Flux Control; Threshold; Excess Capacity"Flux Control; Threshold; Excess Capacity" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property.
Supercomplex
