In enzymology, a CDP-diacylglycerol—glycerol-3-phosphate 3-phosphatidyltransferase () is an enzyme that catalyzes the chemical reaction
CDP-diacylglycerol + sn-glycerol 3-phosphate CMP + 3(3-sn-phosphatidyl)-sn-glycerol 1-phosphate
Thus, the two substrates of this enzyme are CDP-diacylglycerol and sn-glycerol 3-phosphate, whereas its two products are CMP and 3(3-sn-phosphatidyl)-sn-glycerol 1-phosphate.
This enzyme belongs to the family of transferases, specifically those transferring non-standard substituted phosphate groups. This enzyme participates in glycerophospholipid metabolism.
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