Abstract

A cDNA sequence coding for a cytochrome P450 of the CYP4F subfamily was isolated from total RNA of sea bass kidney by rapid amplification of cDNA ends. The full length sequence coded for a protein of 526 amino acids. The amino acid sequence shared 39% to 56% residue identities with the mammalian CYP4F sequences, and thus was named CYP4F7 (accession number AF123541). RNA blot analysis using CYP4F7 cDNA as a probe indicated that the corresponding mRNA was only detected in kidney. Expression in the kidney was constitutive, and no induction of this mRNA was detected in this or other tissues, with any of the inducers tested, including peroxisome proliferators.

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