fig3
Figure 3. Enzymatic activity of PNPLA3. PNPLA3 is an important protein that catalyzes crucial reactions in lipid metabolism. It primarily catalyzes three reactions: acting as a triacylglycerol lipase, functioning as a phospholipase A2 by removing the fatty acid attached to the 2-position of phosphatidylethanolamine, choline plasmalogen, and phosphatides, and specifically catalyzing coenzyme A (CoA)-dependent acylation of 1-acyl-sn-glycerol 3-phosphate (2-lysophosphatidic acid) to generate phosphatidic acid.