Expression and characterization of a rabbit liver cytochrome P450 belonging to P450IIB subfamily with the aid of the baculovirus expression vector system.

Abstract:

:Using baculovirus a cDNA for cytochrome P450 (P450F1) belonging to rabbit P450IIB subfamily was expressed in Spodoptera frugiperda cells, where P450F1 was located on electron-dense structures (derived from the endoplasmic reticulum) present in both the cytoplasm and nucleus. Partially purified P450F1 exhibited absorption spectra similar to those of P450(1), the major phenobarbital-inducible form in rabbit liver. Like P450(1), P450F1 could oxidize aminopyrine, benzphetamine, 7-ethoxycoumarin, 1-nitropropane, and 2-nitropropane, though its activities toward benzphetamine and 7-ethoxycoumarin were about 50 and 5%, respectively, of those of P450(1). It is concluded that the members of P450IIB subfamily can act on a variety of xenobiotics, although substrate preferences are different among them.

authors

Ohta D,Matsu-ura Y,Sato R

doi

10.1016/0006-291x(91)91577-y

subject

Has Abstract

pub_date

1991-03-15 00:00:00

pages

394-9

issue

2

eissn

0006-291X

issn

1090-2104

pii

0006-291X(91)91577-Y

journal_volume

175

pub_type

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