Phosphatidic Acid (also know as diacylglycerol-3-phosphate) is
formed by esterification of glycerol-3-phosphate with two fatty
acids. Phosphatidic acid is an important intermediate in
synthesis of fats and glycerophospholipids. In fat synthesis,
the phosphate from phosphatidic acid is removed to form 1,2-diacylglycerol
and then a third fatty acid is esterified to yield triacyglycerol
(fat).