In enzymology, an alkenylglycerophosphocholine hydrolase (EC 3.3.2.2) is an enzyme that catalyzes the chemical reaction

1-(1-alkenyl)-sn-glycero-3-phosphocholine + H₂O ${\displaystyle \rightleftharpoons }$ an aldehyde + sn-glycero-3-phosphocholine

Thus, the two substrates of this enzyme are 1-(1-alkenyl)-sn-glycero-3-phosphocholine and H₂O, whereas its two products are aldehyde and sn-glycero-3-phosphocholine.

This enzyme belongs to the family of hydrolases, specifically those acting on ether bonds (ether hydrolases). The systematic name of this enzyme class is 1-(1-alkenyl)-sn-glycero-3-phosphocholine aldehydohydrolase. This enzyme is also called lysoplasmalogenase. This enzyme participates in ether lipid metabolism.

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• Ellingson JS; Lands WEM (1968). "Phospholipid reactivation of plasmalogen metabolism". Lipids. 3 (2): 111–120. doi:10.1007/BF02531727. hdl:2027.42/141883. PMID 17805898.
• Warner HR; Lands WEM (1961). "The metabolism of plasmalogen: enzymatic hydrolysis of the vinyl ether" (PDF). J. Biol. Chem. 236 (9): 2404–2409. PMID 13783189.

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