What is "phosphocholine"

n. 1 (context organic compound English) The choline ester of phosphoric acid 2 (context by extension English) The fatty acid esters of this compound; lecithin

Phosphocholine is an intermediate in the synthesis of phosphatidylcholine in tissues. Phosphocholine is made in a reaction, catalyzed by choline kinase, that converts ATP and choline into phosphocholine and ADP. Phosphocholine is a molecule found, for example, in lecithin.

It is also used by nematodes and human placentas as a posttranslational modification to suppress an immune response by their hosts.

It is also one of the binding targets of C-reactive protein (CRP). Thus, when a cell is damaged, CRP binds to phosphocholine, beginning the recognition and phagocytotic immunologic response.

Phosphocholine is a natural constituent of hens' eggs (and many other eggs) often used in biomimetic membrane studies.