H. Tainaka et al., EFFECTS OF ELEVATED EXPRESSION OF THE CYP51 (P450(14DM)) GENE ON THE STEROL CONTENTS OF SACCHAROMYCES-CEREVISIAE, Journal of fermentation and bioengineering, 79(1), 1995, pp. 64-66
Lanosterol metabolism was elevated in yeast cells cultured both aerobi
cally and semi-anaerobically by increased expression of lanosterol 14
alpha-demethylase P450 (P450(14DM) or CYP51). However, despite increas
es in the diene-intermediates of ergosterol biosynthesis, the ergoster
ol content was not affected. These results suggested that the levels o
f cellular sterols are controlled in at least two stages, and that the
concomitant elevation of P450(14DM) and ergostadienols desaturase (P4
50(22DS)) is required to increase the cellular ergosterol content.