Ethanolaminephosphotransferase that catalyzes the transfer of phosphoethanolamine/PE from CDP-ethanolamine to lipid acceptors, the final step in the synthesis of PE via the 'Kennedy' pathway. PE is the second most abundant phospholipid of membranes in mammals and is involved in various membrane-related cellular processes. The enzyme is critical for the synthesis of several PE species and could also catalyze the synthesis of ether-linked phospholipids like plasmanyl- and plasmenyl-PE which could explain it is required for proper myelination and neurodevelopment. a 1,2-diacyl-sn-glycerol + CDP-ethanolamine = a 1,2-diacyl-sn-glycero-3-phosphoethanolamine + CMP + H(+) Phospholipid metabolism; phosphatidylethanolamine biosynthesis; phosphatidylethanolamine from ethanolamine: step 3/3. Belongs to the CDP-alcohol phosphatidyltransferase class-I family. Truncated C-terminus. Truncated C-terminus. Truncated C-terminus.