Diacylglycerol cholinephosphotransferase

diacylglycerol cholinephosphotransferase

Identifiers

EC number

2.7.8.2

Databases

PDB structures

AmiGO / EGO

Search
PMC	articles
PubMed	articles
NCBI	proteins

In enzymology, a diacylglycerol cholinephosphotransferase (EC 2.7.8.2) is an enzyme that catalyzes the chemical reaction

CDP-choline + 1,2-diacylglycerol

\rightleftharpoons

CMP + a phosphatidylcholine

Thus, the two substrates of this enzyme are CDP-choline and 1,2-diacylglycerol, whereas its two products are CMP and phosphatidylcholine.^[1]

Classification

This enzyme belongs to the family of transferases, specifically those transferring non-standard substituted phosphate groups.

Nomenclature

The systematic name of this enzyme class is CDP choline:1,2-diacylglycerol cholinephosphotransferase. Other names in common use include:

1-alkyl-2-acetyl-m-glycerol:CDPcholine choline phosphotransferase,
1-alkyl-2-acetyl-sn-glycerol cholinephosphotransferase,
1-alkyl-2-acetylglycerol cholinephosphotransferase,
alkylacylglycerol choline phosphotransferase,
alkylacylglycerol cholinephosphotransferase,
CDP-choline diglyceride phosphotransferase,
cholinephosphotransferase,
CPT,
cytidine diphosphocholine glyceride transferase,
cytidine diphosphorylcholine diglyceride transferase,
diacylglycerol choline phosphotransferase,
phosphocholine diacylglyceroltransferase,
phosphorylcholine-glyceride transferase, and
sn-1,2-diacylglycerol cholinephosphotransferase.

Biological role

This enzyme participates in 3 metabolic pathways: aminophosphonate metabolism, glycerophospholipid metabolism, and ether lipid metabolism.

References

↑ Coleman R, Bell RM (1977). "Phospholipid synthesis in isolated fat cells. Studies of microsomal diacylglycerol cholinephosphotransferase and diacylglycerol ethanolaminephosphotransferase activities". J. Biol. Chem. 252 (9): 3050–6. PMID 192727.

Lee TC, Blank ML, Fitzgerald V, Snyder F (1982). "Formation of alkylacyl- and diacylglycerophosphocholines via diradylglycerol cholinephosphotransferase in rat liver". Biochim. Biophys. Acta. 713 (2): 479–83. doi:10.1016/0005-2760(82)90269-7. PMID 6295501.
Parthasarathy S, Cady RK, Kraushaar DS, Sladek NE, Baumann WJ (1978). "Inhibition of diacylglycerol:CDPcholine cholinephosphotransferase activity by dimethylaminoethyl p-chlorophenoxyacetate". Lipids. 13 (2): 161–4. doi:10.1007/BF02533260. PMID 204847.
Renooij W, Snyder F (1981). "Biosynthesis of 1-alkyl-2-acetyl-sn-glycero-3-phosphocholine (platelet activating factor and a hypotensive lipid) by cholinephosphotransferase in various rat tissues". Biochim. Biophys. Acta. 663 (2): 545–56. doi:10.1016/0005-2760(81)90182-x. PMID 6260215.

Transferases: phosphorus-containing groups (EC 2.7)

2.7.1-2.7.4:
phosphotransferase/kinase
(PO₄)

2.7.1: OH acceptor	Hexo- Gluco- Fructo- Hepatic Galacto- Phosphofructo- 1 Liver Muscle Platelet 2 Riboflavin Shikimate Thymidine ADP-thymidine NAD⁺ Glycerol Pantothenate Mevalonate Pyruvate Deoxycytidine PFP Diacylglycerol Phosphoinositide 3 Class I PI 3 Class II PI 3 Sphingosine Glucose-1,6-bisphosphate synthase

2.7.2: COOH acceptor	Phosphoglycerate Aspartate kinase

2.7.3: N acceptor	Creatine

2.7.4: PO₄ acceptor	Phosphomevalonate Adenylate Nucleoside-diphosphate Uridylate Guanylate Thiamine-diphosphate

2.7.6: diphosphotransferase
(P₂O₇)

2.7.7: nucleotidyltransferase
(PO₄-nucleoside)

Polymerase

DNA polymerase	DNA-directed DNA polymerase I II III IV V RNA-directed DNA polymerase Reverse transcriptase Telomerase DNA nucleotidylexotransferase/Terminal deoxynucleotidyl transferase

RNA nucleotidyltransferase	RNA polymerase/DNA-directed RNA polymerase RNA polymerase I RNA polymerase II RNA polymerase III RNA polymerase IV Primase RNA-dependent RNA polymerase PNPase

Phosphorolytic
3' to 5' exoribonuclease

Nucleotidyltransferase

Guanylyltransferase

mRNA capping enzyme

Other

2.7.8: miscellaneous

Phosphatidyltransferases	CDP-diacylglycerol—glycerol-3-phosphate 3-phosphatidyltransferase CDP-diacylglycerol—serine O-phosphatidyltransferase CDP-diacylglycerol—inositol 3-phosphatidyltransferase CDP-diacylglycerol—choline O-phosphatidyltransferase

Glycosyl-1-phosphotransferase	N-acetylglucosamine-1-phosphate transferase

2.7.10-2.7.13: protein kinase
(PO₄; protein acceptor)

2.7.10: protein-tyrosine	see tyrosine kinases

2.7.11: protein-serine/threonine	see serine/threonine-specific protein kinases

2.7.12: protein-dual-specificity	see serine/threonine-specific protein kinases

2.7.13: protein-histidine	Protein-histidine pros-kinase Protein-histidine tele-kinase Histidine kinase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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