Cytochrome c binding affects the conformation of cytochrome a in cytochrome c oxidase.
نویسندگان
چکیده
منابع مشابه
The 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...
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 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 Reaction of Cytochrome Oxidase with Cytochrome c*
In recent work on the reaction between oxygen and reduced cytochrome oxidase made by the method of Yonetani (1)) Gibson and Greenwood (2) found that the reaction is complex and that at least two spectroscopically distinguishable reactions must take place. The kinetic changes were interpreted in terms of a scheme proposed by Keilin and Hartree (3), according to which cytochrome oxidase preparati...
متن کاملThe Reaction of Cytochrome Oxidase with Cytochrome C.
In recent work on the reaction between oxygen and reduced cytochrome oxidase made by the method of Yonetani (1)) Gibson and Greenwood (2) found that the reaction is complex and that at least two spectroscopically distinguishable reactions must take place. The kinetic changes were interpreted in terms of a scheme proposed by Keilin and Hartree (3), according to which cytochrome oxidase preparati...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1992
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)48493-1