Reducing agent used in lipogenesis is derived from
NADPH is involved as donor of reducing equivalents in both the reduction of the 3-ketoacyl and of the 2, 3-unsaturated acyl derivatives. The oxidative reactions of the pentose phosphate are the chief source of the hydrogen required for the reductive synthesis of fatty acids.
Pentose phosphate pathway
Glycolysis
TCA cycle
Gluconeogenesis