Results 191 to 200 of about 25,325 (230)
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Archives of Biochemistry and Biophysics, 1982
Abstract We have assayed the ubiquinol-cytochrome c reductase activity either in situ or in different mitochondrial fractions, including the isolated bc 1 complex, employing ubiquinol-1 and exogenous cytochrome c as substrates. A clear biphasic behavior of both the time courses and the initial rates of cytochrome c reduction have been ...
M D, Esposti, G, Lenaz
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Abstract We have assayed the ubiquinol-cytochrome c reductase activity either in situ or in different mitochondrial fractions, including the isolated bc 1 complex, employing ubiquinol-1 and exogenous cytochrome c as substrates. A clear biphasic behavior of both the time courses and the initial rates of cytochrome c reduction have been ...
M D, Esposti, G, Lenaz
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Biochemistry, 1990
Seven single-site mutants in six residues of the cyt b polypeptide of Rhodobacter capsulatus selected for resistance to the Qo site inhibitors stigmatellin, myxothiazol, or mucidin [Daldal, F., Tokito, M.K., Davidson, E., & Faham, M. (1989) EMBO J. 8, 3951-3961] have been characterized by using optical and EPR spectroscopy and single-turnover kinetic ...
D E, Robertson, F, Daldal, P L, Dutton
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Seven single-site mutants in six residues of the cyt b polypeptide of Rhodobacter capsulatus selected for resistance to the Qo site inhibitors stigmatellin, myxothiazol, or mucidin [Daldal, F., Tokito, M.K., Davidson, E., & Faham, M. (1989) EMBO J. 8, 3951-3961] have been characterized by using optical and EPR spectroscopy and single-turnover kinetic ...
D E, Robertson, F, Daldal, P L, Dutton
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1986
Ubiquinone-10 can be extracted from lyophilized chromatophores of Rhodobacter sphaeroides (previously called Rhodopseudomonas sphaeroides) without significant losses in other components of the electron-transfer chain or irreversible damages in the membrane structure.
G, Venturoli +3 more
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Ubiquinone-10 can be extracted from lyophilized chromatophores of Rhodobacter sphaeroides (previously called Rhodopseudomonas sphaeroides) without significant losses in other components of the electron-transfer chain or irreversible damages in the membrane structure.
G, Venturoli +3 more
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Ubiquinol regeneration by plasma membrane ubiquinone reductase
Protoplasma, 1998Several enzyme systems have been proposed to play a role in the maintenance of ubiquinol in membranes other than the inner mitochondrial membrane. The aim of this study was to investigate the mechanisms involved in NADH-driven regeneration of antioxidant ubiquinol at the plasma membrane. Regeneration was measured by quantifying the oxidized and reduced
A. Arroyo +3 more
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Does succinate oxidation yield FADH2 or ubiquinol?
Biochemical Education, 2000Most textbooks still show the oxidation of succinate in the tricarboxylic acid (TCA) cycle resulting in the reduction of FADH2. Such a presentation does not reflect the reaction catalysed by the enzyme in vivo or in vitro, does not simplify the treatment of the reaction, and is unnecessarily misleading and confusing.
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Chapter 8 Mitochondrial ubiquinol—cytochrome c oxidoreductase
1992Publisher Summary This chapter discusses the mitochondrial ubiquinol-cytochrome c oxidoreductase. Quinol-cytochrome c (plastocyanine) oxidoreductase, also called “bc1 (b6f)-complex,” is one of the most ancient and ubiquitous electron transfer complexes.
Georg Bechmann +2 more
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Antioxidant activity of ubiquinol
Free Radical Biology and Medicine, 1990Yorihiro Yamamoto +2 more
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