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Induction of cytochrome P-450 by phenobarbital is mediated at the level of transcription.

Pike, SF; Shephard, EA; Rabin, BR; Phillips, IR; (1985) Induction of cytochrome P-450 by phenobarbital is mediated at the level of transcription. Biochem Pharmacol , 34 (14) pp. 2489-2494.

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Abstract

We have previously shown that the 43-fold induction by phenobarbital of the major phenobarbital-inducible cytochrome P-450 of rat liver microsomal membranes (PB P-450) is mediated by a 20-fold increase in the amount of its mRNA in the cytoplasm. Here we demonstrate that the induction of the mRNA can be almost entirely accounted for by an increase in the rate of transcription of genes coding for PB P-450, and involves little or no change in the rates of processing, transport or degradation of the mRNA. Phenobarbital treatment resulted in no amplification or rearrangement of PB P-450 genes.

Type: Article
Title: Induction of cytochrome P-450 by phenobarbital is mediated at the level of transcription.
Location: England
Keywords: Animals, Cytochrome P-450 Enzyme System, Enzyme Induction, Gene Amplification, In Vitro Techniques, Male, Phenobarbital, Polychlorinated Dibenzodioxins, RNA, Messenger, Rats, Rats, Inbred Strains, Transcription, Genetic
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Structural and Molecular Biology
URI: http://discovery.ucl.ac.uk/id/eprint/1412517
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