Reactions of oxygenated cytochrome oxidase.
نویسندگان
چکیده
منابع مشابه
Kinetic studies on the binding of cyanide to oxygenated cytochrome c oxidase.
The reaction of cyanide with oxygenated cytochrome c oxidase was followed by means of flow-flash techniques. The oxygenated form, produced after photolysis of the partially reduced CO complex in the presence of cyanide and O2, shows cyanide-binding properties distinct from those of both the oxidized and the reduced forms of the protein. The binding is a single process (k = 22M-1-S-1) linearly d...
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Oxygenated cytochrome o(s) from Vitreoscilla was photodissociated by a laser flash but the quantum yield was low. The rebinding of oxygen to the ferrous cytochrome proceeded monophasically, and the second order rate constant was 7.8 X 10(7) M-1 s-1, the off rate constant 5.6 X 10(3) s-1, and the calculated dissociation constant for the oxygenated compound 7.2 X 10(-5) M at pH 7.3 and 25 degrees...
متن کاملStudies of the oxygenated compound of cytochrome oxidase.
Results of rapid reaction experiments indicate that the first observable product formed after the reaction of oxygen with purified reduced cytochrome oxidase is a spectral form which corresponds to that of the oxidized enzyme. The latter is then slowly converted to “The Compound,” or so-called oxygenated form. These observations suggest that The Compound is not an intermediate in the cytochrome...
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Using near-infrared spectroscopy, we developed a new approach for measuring the redox state of cytochrome oxidase in the brain under normal blood-circulation conditions. Our algorithm does not require the absorption coefficient of cytochrome oxidase, which differs from study to study. We employed this method for evaluation of effects of changes in oxygen delivery on cerebral oxygenation in rats...
متن کاملMolecular Characterization and Phylogeny Analysis Based on Sequences of Cytochrome Oxidase gene From Hemiscorpius lepturus of Iran
Abstract: Background: Hemiscorpius lepturus is a medically important scorpion found along the Iranian borders, especially near to Khuzestan Province in the south-west of Iran. This is the only non-buthid scorpion which is potentially lethal in southern Iran and is responsible for severe dermonecrotic scorpionism. OBJECTIVES: In this study, DNA fragment of the mitochondrial cytochrome c oxidase ...
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عنوان ژورنال:
- The Journal of biological chemistry
دوره 243 19 شماره
صفحات -
تاریخ انتشار 1968