Lanosterol 14 alpha-demethylase (cytochrome P-45014DM): modulation of its enzyme activity by cholesterol feeding.

Abstract:

:Regulation of the activity of lanosterol 14 alpha-demethylase (cytochrome P-45014DM) by dietary cholesterol was studied in rats. In male rats fed a 3% cholesterol diet for 1 and 4 weeks, the activity of 24,25-dihydrolanosterol 14 alpha-demethylase was decreased in the liver. The cytochrome P-45014DM protein content detected by immunoblotting was also decreased by cholesterol feeding. These results demonstrate that dietary cholesterol acts as a repressive factor for lanosterol 14 alpha-demethylase. Further, the activity was enhanced by preincubation with phosphatase of the enzyme solution from both the control and cholesterol fed rats at the same rate. This result suggests that regulation of the activity involves phosphorylation of this enzyme.

journal_name

Biol Pharm Bull

authors

Sonoda Y,Amano C,Endo M,Sato Y,Sekigawa Y,Fukuhara M

doi

10.1248/bpb.18.1009

subject

Has Abstract

pub_date

1995-07-01 00:00:00

pages

1009-11

issue

7

eissn

0918-6158

issn

1347-5215

journal_volume

18

pub_type

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