Choline-processing enzymes

Choline-processing enzymes are a collective group of enzymes crucial for the metabolism of choline, a nutrient required for the synthesis of the neurotransmitter acetylcholine, membrane lipids (phosphatidylcholine, sphingomyelin), and methyl groups for metabolic reactions. Major enzymes include choline acetyltransferase (critical for acetylcholine synthesis), choline kinase and CEPT1 (involved in phospholipid biosynthesis), PEMT (for methylation reactions), and ENPP6 (a phosphodiesterase that hydrolyzes choline-containing compounds). Dysfunction or deficiency in these enzymes is linked to liver disorders, neurodegenerative diseases, muscle damage, and cardiovascular risk. As biomedical targets, these enzymes are relevant for therapies aiming to modulate neurotransmitter levels (e.g., in Alzheimer's), improve liver function, and manage certain metabolic and cardiovascular conditions.

Other names

Choline metabolic enzymesCholine-utilizing enzymesCholine biosynthetic enzymesCholine degradation enzymes

Inhibition of acetylcholine breakdown (by inhibiting acetylcholinesterase, increases acetylcholine at synapses); Stimulation of acetylcholine synthesis (by increasing choline supply or enzyme activity); Modulation of phospholipid metabolism; Regulation of methyl group flux in metabolism