Kinetic studies on cytochrome b -c 1 interaction in the isolated succinate-cytochrome c reductase
نویسندگان
چکیده
منابع مشابه
Soluble Cytochrome b-c, Complex and the Reconstitution of Succinate-Cytochrome c Reductase*
The cytochrome b-c1 complex has been “solubilized” and purified to a stage containing 6.5 nmoles of cytochrome b per mg of protein. Seven bands are resolved on a polyacrylamide gel electrophoretic column in sodium dodecyl sulfateP-mercaptoethanol medium. Five of these seven bands have been identified as cytochromes b and cl and a non-heme iron protein. The remaining two bands might be associate...
متن کاملQuantitative resolution of succinate-cytochrome c reductase into succinate-ubiquinone and ubiquinol-cytochrome c reductases.
A purified, active succinate-ubiquinone reductase was prepared from succinate-cytochrome c reductase without damage to ubiquinol-cytochrome c reductase by 1.1% Triton X-100 solubilization at pH 8.0, and calcium phosphate column chromatography in 50 mM Tris-succinate buffer, pH 8.0, containing 30 mM potassium phosphate. Succinate-ubiquinone reductase thus obtained contains ubiquinone and catalyz...
متن کاملEffect of specific lysine modification on the reduction of cytochrome c by succinate-cytochrome c reductase.
The reduction of cytochrome c by succinate-cytochrome c reductase was studied at very low cytochrome c concentrations where the reaction between cytochrome c1 and cytochrome c was rate limiting. The rate constant for the reaction was found to be independent of ionic strength up to 0.1 M chloride, and to decrease rapidly at higher ionic strength, suggesting that the interaction between cytochrom...
متن کاملSoluble cytochrome b-c1 complex and the reconstitution of succinate-cytochrome c reductase.
The cytochrome b-c1 complex has been “solubilized” and purified to a stage containing 6.5 nmoles of cytochrome b per mg of protein. Seven bands are resolved on a polyacrylamide gel electrophoretic column in sodium dodecyl sulfateP-mercaptoethanol medium. Five of these seven bands have been identified as cytochromes b and cl and a non-heme iron protein. The remaining two bands might be associate...
متن کاملKinetic studies on [methionine sulphoxide] cytochrome c.
A cytochrome c haem ligand, methionine-80, was photo-oxidized to methionine sulphoxide and the subsequent changes in redox properties and ligand binding were monitored kinetically. Isoelectric focusing of the product showed the presence of a single oxidized species, capable of binding CO when reduced. The binding of CO to the reduced protein was followed in stopped-flow experiments, which revea...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1972
ISSN: 0014-5793
DOI: 10.1016/0014-5793(72)80370-3