The Choline reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Choline

Choline is a chemical with chemical formula

(CH₃)₃N⁺CH₂CH₂OH.

The neurotransmitter acetylcholine is converted into choline and acetic acid by the enzymes acetylcholinesterase. This happens typically in the juncture between a motor nerve cell and a muscle cell. Pseudocholinesterase, the other major form of cholinesterase, is also capable of breaking down acetylcholine.

Acetylcholine is synthesized from choline and acetate, a reaction catalyzed by the enzymes acetyl coenzyme A and choline acetyltransferase.

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