試題詳解

27. Phosphatidic acid occupies a central position in glycerolipid metabolism. Which reaction of phosphatidic acid commits the molecule toward membrane phospholipid synthesis rather than triacylglycerol storage?
(A) Dephosphorylation to diacylglycerol by phosphatidic acid phosphatase
(B) Activation to CDP-diacylglycerol by CTP-dependent cytidylyltransferase
(C) Acylation by acyl-CoA from 1,2-diacylglycerol
(D) Hydrolysis by phospholipase C to generate second messengers
(E) Translocation to lipid droplets for sequestration into neutral lipid pools