Application Antitumor phospholipid3, induces apoptosis in three human leukemic cell lines4. Biochem/physiol Actions C18-phosphocholine was the most potent alkylphosphocholine tested in inhibiting phosphatidylcholine biosynthesis.1 The effect is mediated by interrupting the translocation of the rate-limiting enzyme, CTP:phosphocholine cytidylyltransferase, to membranes, where it is active.2 |