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We have recently cloned a full-length cDNA encoding the rat hepatic cholesterol 7 alpha-hydroxylase cytochrome P450 (P450c7) (Li, Y. C., Wang, D. P., and Chiang, J. Y. L. (1990) J. Biol. Chem. 265, 12012-12019), which catalyzes the rate-limiting…

Human liver cholesterol 7 alpha-hydroxylase (CYP7) cDNAs were isolated from a human liver cDNA library. A full-length cDNA has 2901 nucleotides which encode a typical P450 polypeptide of 504 amino acid residues. Two different sequences of codon 100,…

A cholesterol 7 alpha-hydroxylase gene containing 8 kb of the 5'-flanking region and 5 kb of the transcription region which covers exons 1 to 5 was isolated from a rat genomic library. The 2015 bp nucleotide sequence 5'-upstream from the start codon…

The transcriptional activity of the cholesterol 7 alpha-hydroxylase gene CYP7A is repressed by bile acids. Taurine conjugates of chenodeoxycholate and deoxycholate, but not cholate and ursodeoxycholate, inhibited the CYP7A promoter/luciferase…

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