Isolation of a new mouse cDNA clone: hybrid form of cytochrome P450 2b10 and NADPH-cytochrome P450 oxidoreductase.
We have isolated a novel cDNA sequence from a male mouse liver library. It consists of an open reading frame containing no stop codon of 1348 bp which share 98% similarity with the cytochrome P450 2b10 followed by 95 nucleotides sharing 88% identity with the mouse NADPH cytochrome P450 oxidoreductase. Proteins are encoded by the opposite DNA strands. Genomic amplification excludes a library artefact or a de novo recombination event. RT-PCR analyses revealed expression of this clone in the liver of male and female mice as well as in kidney, lung and intestine. This cDNA was not, however, induced by phenobarbital. Preliminary results indicate that this cDNA could span more than 2.5 kb. This study is the first description of a cytochrome P450 cDNA sequence encoding part of both a cytochrome P450 and the NADPH cytochrome P450 oxidoreductase in mammalian liver.
Damon
M
M
Groupe Détoxication et Réparation Tissulaire, Faculté de Pharmacie, Université de Rennes I, France.
Fautrel
A
A
Marc
N
N
Guillouzo
A
A
Corcos
L
L
D000595:Amino Acid Sequence; D000818:Animals; D016477:Artifacts; D001189:Aryl Hydrocarbon Hydroxylases; D001483:Base Sequence; D003001:Cloning, Molecular; D003577:Cytochrome P-450 Enzyme System / Q000096:biosynthesis*; D000072467:Cytochrome P450 Family 2; D018076:DNA, Complementary; D004790:Enzyme Induction; D005260:Female; D015723:Gene Library; D008099:Liver / Q000201:enzymology*; D008168:Lung / Q000201:enzymology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008969:Molecular Sequence Data; D009251:NADPH-Ferrihemoprotein Reductase / Q000096:biosynthesis* / Q000737:chemistry; D009928:Organ Specificity; D010634:Phenobarbital / Q000494:pharmacology; D012333:RNA, Messenger / Q000096:biosynthesis; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000737:chemistry; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid; D012727:Sex Characteristics; D013250:Steroid Hydroxylases; D014158:Transcription, Genetic
D018076:DNA, Complementary; D012333:RNA, Messenger; D011994:Recombinant Proteins; D003577:Cytochrome P-450 Enzyme System; D013250:Steroid Hydroxylases; D001189:Aryl Hydrocarbon Hydroxylases; C101679:Cyp2b10 protein, mouse; D000072467:Cytochrome P450 Family 2; D009251:NADPH-Ferrihemoprotein Reductase; D010634:Phenobarbital