(eth'ă-nol'ă-mēn-fos'fō-trans'fĕr-ās), A transferase that catalyzes the reaction of CDP-ethanolamine with a 1,2-diacylglycerol to yield CMP and a phosphatidylethanolamine; a key step in phospholipid biosynthesis. Synonym(s): phosphorylethanolamine glyceridetransferase