Abstract

A single injection of β-naphthoflavone dispersed in corn oil causes significant changes in rabbit liver polysome and polysomal poly(A+)mRNA driven in vitro protein synthesis. The changes occur between 6–18 hr and 30–36 hr after the injection. Our data indicate that the first effect is due to the β-naphthoflavone and the second effect is due to the oil vehicle. In vitro translation of rabbit liver polysomes obtained from treated rabbits followed by specific immunoprecipition and gel electrophoresis, showed that maximal levels of translatable cytochrome P-450 LM 4 occurred 18–24 hr after β-naphthoflavone treatment.

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