منابع مشابه
Charge distribution in electron transport components: cytochrome c and cytochrome c oxidase mixtures.
Wm. R. Heineman** and T. Kuwana Department of Chemistry, Ohio State University Columbus, Ohio 432 10 and Charles R. Hartzell Department of Biochemistry, Pennsylvania State University University Park, Pennsylvania 16802 Received December 15,1972 SUMMARY. Mixtures of cytochrome c oxidase and cytochrome c have been titrated by coulometrically generated reductant , methyl viologen radical cation, a...
متن کاملCytochrome c Oxidase Components V. A CYTOCHROME a PREPARATIOK FREE OF CYTOCHROME us*
Despite considerable spectral evidence supporting the concept of two cytochromes, a and a3, in the terminal respiratory system (l-15), there has not been uniform agreement that the mammalian cytochrome c osidase system contains these two cytochromes (16-18). Recent work which distinguished these cytochromes chemically has strengthened the spectral observations (19, 20). It was possible by the u...
متن کاملCytochrome c oxidase.
Within the past year, the structures of the cytochrome c oxidase from the soil bacterium Paracoccus denitrificans and of the metal centers of the cytochrome c oxidase from bovine heart mitochondria, both determined at 2.8 A resolution by X-ray crystallography, have been reported. The structures form a basis for understanding the mechanism of this redox-coupled transmembrane proton pump, which i...
متن کاملThe Cytochrome C-cytochrome Oxidase Complex
In the preceding paper the oxidation of substrates by “indophenol oxidase” was demonstrated to be a joint action of cytochrome and cytochrome oxidase. It was further shown that with a given amount of oxidase the velocity of hydroquinone oxidation reached a maximum as the amount of added cytochrome was increased. The latter fact immediately suggested the probability that the rapid aerobic oxidat...
متن کاملThe cytochrome c binding site on cytochrome c oxidase.
Cytochrome c oxidase (EC 1.9.3.1) is the terminal enzyme of the mitochondria respiratory chain catalysing electron transfer from cytochrome c to molecular oxygen [ 1,2]. The molecular mechanism of this process is still not understood. At present, little is known about such important structural features as the position of the prosthetic groups or the location and characteristics of the cytochrom...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1964
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)91333-5