Michael Waterman
Faculty Member
Last active: 2/12/2015

High-level expression of functional human cytochrome P450 1A2 in Escherichia coli.

Fisher CW, Caudle DL, Martin-Wixtrom C, Quattrochi LC, Tukey RH, Waterman MR, Estabrook RW
FASEB J. 1992 6 (2): 759-64

PMID: 1537466 · DOI:10.1096/fasebj.6.2.1537466

Enzymatically active human cytochrome P450 1A2 was expressed in Escherichia coli utilizing the pCWori+ vector containing a modified cDNA. The coding sequence for the NH2-terminal region of the protein was modified by the alignment and substitution of a 27 bp segment from a modified bovine P450 17A1 cDNA onto the 5' end of the open reading frame of P450 1A2 at amino acid 21. The expressed chimeric P450 was produced at a high level in a functionally intact form, as assayed by the formation in vivo of the 449 nm absorbance band of the CO complex of the reduced hemoprotein. E. coli membrane preparations were shown to contain P450 1A2, which was active in the 2-hydroxylation of estradiol, and the O-deethylation of 7-ethoxycoumarin and 7-ethoxyresorufin, when reconstituted with recombinant rat liver NADPH-cytochrome P450 reductase.

MeSH Terms (17)

Amino Acid Sequence Animals Base Sequence Cattle Cell Membrane Cloning, Molecular Cytochrome P-450 Enzyme System Escherichia coli Gene Library Humans Kinetics Liver Molecular Sequence Data Molecular Weight Plasmids Recombinant Proteins Sequence Homology, Nucleic Acid

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