Choline catabolism

Summary
Organism
Homo sapiens (human)
Reactome
R-HSA-6798163
PubChem
R-HSA-6798163
Description
  • Choline is an essential water-soluble nutrient in humans, serving as a precursor of phospholipids and the neurotransmitter acetylcholine. It is often associated with B vitamins based on its chemical structure but it isn't an official B vitamin. Its oxidation to betaine provides a link to folate-dependent, one-carbon metabolism where betaine is a methyl donor in the methionine cycle. Betaine is further metabolised to dimethylglycine which is cleared by the kidney (Ueland 2011, Hollenbeck 2012).
Click on a node on the pathway to see its details. Glycoproteins are marked with a glycoprotein icon in their name.
Displaying all 5 entries
UniProt ID Protein Name Gene Symbol Pathway Viewer
P49419 Alpha-aminoadipic semialdehyde dehydrogenase
  • ALDH7A1
  • ATQ1
view
Q8IWA5 Choline transporter-like protein 2
  • CTL2
  • PSEC0210
  • SLC44A2
view
Q8WWI5 Choline transporter-like protein 1
  • CD92
  • CDW92
  • CTL1
  • SLC44A1
view
Q9H015 Solute carrier family 22 member 4
  • ETT
  • OCTN1
  • SLC22A4
  • UT2H
view
Q9UL12 Sarcosine dehydrogenase, mitochondrial
  • DMGDHL1
  • SARDH
view

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 6, 2026