PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2893798-4 1988 The limiting step in phosphatidylcholine biosynthesis was the formation of CDP-choline catalyzed by CTP:choline-phosphate cytidylyltransferase (EC 2.7.7.15) as monitored by the decrease in phosphocholine labeling following phospholipase C treatment of cells prelabeled with [3H]choline. Cytidine Triphosphate 100-103 cut like homeobox 1 Homo sapiens 75-78