Dimethylallyl
Pyrophosphate
Dimethylallyl pyrophosphate
(DPP) is one of two five-carbon
building blocks of the isoprenoids. Isopentenyl pyrophosphate
(IPP) is the other. DPP is synthesized from IPP, as shown
in Figure 19.19. The first step
in isoprenoid synthesis is as follows:
DPP + IPP <=>
Geranyl Pyrophosphate + PPi
(Figure 19.20)
See also: Cholesterol
Biosynthesis, Steroid Metabolism,
Steroid Hormone Synthesis, Bile Acids, Lipid-Soluble
Vitamins, Figure 19.28
INTERNET LINK: Sterol
Biosynthesis