1-alkyl-2-acetylglycerophosphocholine esterase

The enzyme 1-alkyl-2-acetylglycerophosphocholine esterase (EC 3.1.1.47) catalyzes the reaction

1-alkyl-2-acetyl-sn-glycero-3-phosphocholine + H₂O ${\displaystyle \rightleftharpoons }$ 1-alkyl-sn-glycero-3-phosphocholine + acetate

1-alkyl-2-acetylglycerophosphocholine esterase
Identifiers
EC no.	3.1.1.47
CAS no.	76901-00-3
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
Search PMC articles PubMed articles NCBI proteins

The former is also known as platelet-activating factor. There are multiple enzymes with this function:

• Lipoprotein-associated phospholipase A2
• Platelet-activating factor acetylhydrolase 2, cytoplasmic
• Platelet-activating factor acetylhydrolase 1b: regulatory subunit 1, catalytic subunit 2, catalytic subunit 3

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is 1-alkyl-2-acetyl-sn-glycero-3-phosphocholine acetohydrolase. Other names in common use include 1-alkyl-2-acetyl-sn-glycero-3-phosphocholine acetylhydrolase, and alkylacetyl-GPC:acetylhydrolase. This enzyme participates in ether lipid metabolism.

Structural studies

As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes 1BWP, 1BWQ, 1BWR, 1ES9, 1FXW, 1VYH, and 1WAB.