phosphatidic acid biosynthetic process biological_process phosphatidic acid biosynthesis phosphatidic acid formation Reactome:R-HSA-1483166 GO:0006654 The chemical reactions and pathways resulting in the formation of phosphatidic acid, any derivative of glycerol phosphate in which both the remaining hydroxyl groups of the glycerol moiety are esterified with fatty acids. phosphatidic acid synthesis phosphatidic acid anabolism phosphatidic acid metabolic process glycerophospholipid biosynthetic process