Glycerophospholipid arachidonoyl-transferase (CoA-independent)

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glycerophospholipid arachidonoyl-transferase (CoA-independent)
glycerophospholipid arachidonoyl-transferase (CoA-independent)
Identifiers
EC no.	2.3.1.147
CAS no.	102347-79-5
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 / QuickGO
PMC
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PubMed	articles
NCBI	proteins

Last updated August 27, 2023

In the field of enzymology, a glycerophospholipid arachidonoyl-transferase (CoA-independent) (EC 2.3.1.147) is an enzyme that catalyzes the chemical reaction:

1-organyl-2-arachidonoyl-sn-glycero-3-phosphocholine + 1-organyl-2-lyso-sn-glycero-3-phosphoethanolamine

\rightleftharpoons

1-organyl-2-arachidonoyl-sn-glycero-3-phosphoethanolamine + 1-organyl-2-lyso-sn-glycero-3-phosphocholine

This enzyme catalyzes the transfer of arachidonic acid and other polyenoic fatty acids from intact choline or ethanolamine-containing glycerophospholipids to the sn-2 position of a lyso- glycerophospholipid. The organyl group on sn-1 of the donor or acceptor molecule can be alkyl, acyl or alk-1-enyl. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups.

Nomenclature

The systematic name of this enzyme class is 1-organyl-2-arachidonoyl-sn-glycero-3-phosphocholine:1-organyl-2-lys o-sn-glycero-3-phosphoethanolamine arachidonoyltransferase (CoA-independent).

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<span class="mw-page-title-main">1-Lysophosphatidylcholine</span>

2-acyl-sn-glycero-3-phosphocholines are a class of phospholipids that are intermediates in the metabolism of lipids. Because they result from the hydrolysis of an acyl group from the sn-1 position of phosphatidylcholine, they are also called 1-lysophosphatidylcholine. The synthesis of phosphatidylcholines with specific fatty acids occurs through the synthesis of 1-lysoPC. The formation of various other lipids generates 1-lysoPC as a by-product.

References

Robinson M, Blank ML, Snyder F (1985). "Acylation of lysophospholipids by rabbit alveolar macrophages Specificities of CoA-dependent and CoA-independent reactions". J. Biol. Chem. 260 (13): 7889–95. PMID 4008481.
Snyder F, Lee TC, Blank ML (1992). "The role of transacylases in the metabolism of arachidonate and platelet activating factor". Prog. Lipid Res. 31 (1): 65–86. doi:10.1016/0163-7827(92)90016-C. PMID 1641397.

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v t e Transferases: acyltransferases (EC 2.3)
2.3.1: other than amino-acyl groups	acetyltransferases: Acetyl-Coenzyme A acetyltransferase N-Acetylglutamate synthase Choline acetyltransferase Dihydrolipoyl transacetylase Acetyl-CoA C-acyltransferase Beta-galactoside transacetylase Chloramphenicol acetyltransferase N-acetyltransferase Serotonin N-acetyl transferase HGSNAT ARD1A Histone acetyltransferase P300/CBP NAT2 palmitoyltransferases: Carnitine O-palmitoyltransferase CPT1 CPT2 Serine C-palmitoyltransferase SPTLC1 SPTLC2 other: Acyltransferase like 2 Aminolevulinic acid synthase Beta-ketoacyl-ACP synthase Glyceronephosphate O-acyltransferase Lecithin—cholesterol acyltransferase Glycerol-3-phosphate O-acyltransferase 1-acylglycerol-3-phosphate O-acyltransferase 2-acylglycerol-3-phosphate O-acyltransferase ABHD5
2.3.2: Aminoacyltransferases	Gamma-glutamyl transpeptidase Peptidyl transferase Transglutaminase Tissue transglutaminase Keratinocyte transglutaminase Factor XIII
2.3.3: converted into alkyl on transfer	Citrate synthase Decylcitrate synthase Citrate (Re)-synthase Decylhomocitrate synthase 2-methylcitrate synthase 2-ethylmalate synthase 3-ethylmalate synthase ATP citrate lyase Malate synthase HMG-CoA synthase HMGCS2 2-hydroxyglutarate synthase 3-propylmalate synthase 2-isopropylmalate synthase Homocitrate synthase Sulfoacetaldehyde acetyltransferase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Coenzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)