[Effect of phospholipids on the activity of highly-purified liver microsome cytochrome P-450 in a reaction of aniline and naphthalene hydroxylation by hydroperoxides].

The effect of different phospholipids on the functional activity of highly purified cytochrome P-450 used as a co-substrate of cumene hydroperoxide was examined. At the molar ratio of phospholipids to cytochrome P-450 that was equal to 30, phosphatidyl serine, phosphatidyl inositol, the total fraction of microsomal phospholipids, and lysophosphatidyl choline increased the hydroxylation rate of aniline and naphthalene. The effect of the above phospholipids on the rate of naphthalene oxidation was much more pronounced. Phosphatidyl choline and sphingomyelin in similar large quantities did not exert a stimulating effect on the reactions studied. The kinetic parameters of aniline oxidation in the systems containing phospholipids that produced an activating effect were investigated.