Abstract

We published isolation of a mouse NADPH-cytochrome P-450 oxidoreductase cDNA and afterward ascribed the cDNA to the guinea-pig instead of the mouse (Ohgiya, S. et al. (1992) Biochim. Biophys. Acta 1171, 103–105 and Corrigendum (1993) Biochim. Biophys. Acta 1174, 313). We report here nucleotide and deduced amino acid sequences of an NADPH-cytochrome P-450 oxidoreductase cDNA isolated from the ddY mouse. The mouse cytochrome P-450 oxidoreductase shares 98.4% identity with its rat counterpart. In particular, clusters of acidic residues that presumably participate in interaction with cytochrome P-450 are highly conserved in primary structures of mammalian cytochrome P-450 oxidoreductases. The mouse cytochrome P-450 oxidoreductase was functionally expressed in yeast using a modified cDNA clone lacking whole noncoding regions.

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