Fig. 1.
Genes of phospholipid synthesis that have been disrupted in mice. Cho, choline; Etn, ethanolamine. Names in italics are genes encoding the following enzymes: Chka,b, choline kinase; Eki2, ethanolamine kinase; Pcyt1a,b, CTP:phosphocholine cytidylytransferase; Pcyt2, CTP:phosphoethanolamine cytidylyltransferase; Pemt, phosphatidylethanolamine N-methytransferase; Pisd, phosphatidylserine decarboxylase; Pss1,2, phosphatidylserine synthase.