phosphocholine

phosphocholine
Choline O-phosphate; important in choline metabolism, e.g., in the biosynthesis of lecithins. SYN: phosphorylcholine.
- p. cytidylyltransferase an enzyme that catalyzes the reaction of p. with CTP to form pyrophosphate and CDP-choline; the rate-limiting step of lecithin biosynthesis; the cytosolic form of the enzyme is inactive (a phosphorylated form of the enzyme).
- p. diacylglycerol transferase an enzyme in lecithin biosynthesis that catalyzes the reaction of 1,2-diacylglycerol with CDP-choline to form CMP and phosphatidylcholine.

Medical dictionary. 2011.

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