Choline dehydrogenase

choline dehydrogenase
Identifiers
EC number	1.1.99.1
CAS number	9028-67-5
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / EGO
Search PMC articles PubMed articles

In enzymology, a choline dehydrogenase (EC 1.1.99.1) is an enzyme that catalyzes the chemical reaction

choline + acceptor $\rightleftharpoons$ betaine aldehyde + reduced acceptor

Thus, the two substrates of this enzyme are choline and acceptor, whereas its two products are betaine aldehyde and reduced acceptor.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with other acceptors. The systematic name of this enzyme class is choline:acceptor 1-oxidoreductase. Other names in common use include choline oxidase, choline-cytochrome c reductase, choline:(acceptor) oxidoreductase, and choline:(acceptor) 1-oxidoreductase. This enzyme participates in glycine, serine and threonine metabolism. It employs one cofactor, PQQ.

References

• K and Adachi O (1985). "Mammalian choline dehydrogenase is a quinoprotein". Agric. Biol. Chem. 49 (12): 3623–3626. doi:10.1271/bbb1961.49.3623. 
• EBISUZAKI K, WILLIAMS JN Jr (1955). "Preparation and partial purification of soluble choline dehydrogenase from liver mitochondria". Biochem. J. 60 (4): 644–6. PMC 1216163. PMID 13249959. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1216163. 
• Gadda G, McAllister-Wilkins EE (2003). "Cloning, Expression, and Purification of Choline Dehydrogenase from the Moderate Halophile Halomonas elongata". Appl. Environ. Microbiol. 69 (4): 2126–32. doi:10.1128/AEM.69.4.2126-2132.2003. PMC 154813. PMID 12676692. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=154813. 
• Takabe T; Tanaka, Y; Aoki, K; Hibino, T; Jikuya, H; Takano, J; Takabe, T; Takabe, T (2003). "Isolation and functional characterization of N-methyltransferases that catalyze betaine synthesis from glycine in a halotolerant photosynthetic organism Aphanothece halophytica". J. Biol. Chem. 278 (7): 4932–42. doi:10.1074/jbc.M210970200. PMID 12466265.