In enzymology, a CDP-diacylglycerol diphosphatase is an enzyme that catalyzes the chemical reaction CDP-diacylglycerol + H2O ⇌ {\displaystyle \rightleftharpoons } CMP + phosphatidateThus, the two substrates of this enzyme are CDP-diacylglycerol and H2O, whereas its two products are CMP and phosphatidate. Wikipedia