KINETICS OF TIAMUTINR INTERACTION WITH CYTOCHROME P-450 FROM RABBIT LIVER

作者: Ingeborg Schuster , Christine Fleschurz , Ilse Helm

DOI: 10.1016/B978-0-08-021523-5.50014-6

关键词: Dissociation rate constantKineticsCytochromeGlycerolStereochemistryChemistryLiver microsomesConformational changeReaction rate constant

摘要: The association reaction between Tiamutin R and partially purified Cytochrome P 450 from rabbit liver microsomes gives rise to a TYPE I spectral change can be observed by stopped-flow kinetics. second order rate constant at 25°C in glycerol containing buffer is about 45 μM −1 s , the dissociation 1.1 . This takes also place very high concentrations where equilibrium studies only modified II complex observed. formation of proceeds rather slowly its dependence on -concentration obviously not interpreted terms binding reaction. parallelism emergence unspecific drug attached phospholipids an indication that accumulation lipid bulk might induce conformational site protein.

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