Artículos de revistas
Nad(p)h- And Superoxide-dependent Nitric Oxide Degradation By Rat Liver Mitochondria
Registro en:
Febs Letters. , v. 583, n. 13, p. 2276 - 2280, 2009.
145793
10.1016/j.febslet.2009.06.012
2-s2.0-67649378399
Autor
Oliveira H.C.
Saviani E.E.
Salgado I.
Institución
Resumen
Mitochondria consume nitric oxide (NO) mainly through reaction with superoxide anion (O2-). Here, we analyzed the O2- sources for NO degradation by isolated rat liver mitochondria. Electron leakage from complex III and reverse electron transport to complex I accounted for O2--dependent NO degradation by mitochondria in the presence of a protonmotive force. Mitochondria incubated with NAD(P)H also presented intense O2- generation and NO degradation rates that were insensitive to respiratory inhibitors and abolished after proteinase treatment. These results suggest that an outer membrane-localized NAD(P)H oxidase activity, in addition to the electron leakage from the respiratory chain, promotes O2--dependent NO degradation in rat liver mitochondria. © 2009 Federation of European Biochemical Societies. 583 13 2276 2280 Poderoso, J.J., The formation of peroxynitrite in the applied physiology of mitochondrial nitric oxide (2009) Arch. Biochem. 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