In addition to de novo DAG that is generated via the Kennedy pathway, DAG precursors for TAG synthesis can also be derived from PC by the reversible action of two enzymes, PC:DAG cholinephosphotransferase (PDCT/ROD1; [ 65 ] and/or cytidine-5′-diphosphocholine:DAG cholinephosphotransferase (CPT; [ 66, 67 ].
Source: wiktionary