Page last updated: 2024-10-24

1-alkyl-2-acetylglycerophosphocholine esterase activity

Definition

Target type: molecularfunction

Catalysis of the reaction: 2-acetyl-1-alkyl-sn-glycero-3-phosphocholine + H2O = 1-alkyl-sn-glycero-3-phosphocholine + acetate. [EC:3.1.1.47]

1-alkyl-2-acetylglycerophosphocholine esterase activity hydrolyzes the ester bond between the choline moiety and the fatty acyl group at the sn-2 position of 1-alkyl-2-acetylglycerophosphocholine, also known as platelet-activating factor (PAF). This enzyme plays a crucial role in the regulation of PAF levels, a potent inflammatory mediator, and is involved in various cellular processes including inflammation, immune responses, and signal transduction. The hydrolysis of PAF by this enzyme leads to the inactivation of the potent biological activity of PAF, thus contributing to the resolution of inflammatory responses.'
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Proteins (5)

ProteinDefinitionTaxonomy
Platelet-activating factor acetylhydrolaseA platelet-activating factor acetylhydrolase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q13093]Homo sapiens (human)
Platelet-activating factor acetylhydrolase IB subunit alpha2A platelet-activating factor acetylhydrolase IB subunit alpha2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P68402]Homo sapiens (human)
Phosphatidylcholine-sterol acyltransferaseA phosphatidylcholine-sterol acyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P04180]Homo sapiens (human)
85/88 kDa calcium-independent phospholipase A2An 85/88 kDa calcium-independent phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O60733]Homo sapiens (human)
Group 10 secretory phospholipase A2A group 10 secretory phospholipase A2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O15496]Homo sapiens (human)

Compounds (26)

CompoundDefinitionClassesRoles
ly 171883LY 171883: structure in first source; leukotriene receptor antagonist

tomelukast : A member of the class of acetophenones that is 1-phenylethanone substituted at position 2 by a hydroxy group, a propyl group at position 3 and a 4-(1H-tetrazol-5-yl)butoxy group at position 4. A leukotriene antagonist, it exhibits anti-asthmatic activity.
acetophenones;
aromatic ether;
phenols;
tetrazoles
anti-asthmatic drug;
leukotriene antagonist
vitamin k 3Vitamin K 3: A synthetic naphthoquinone without the isoprenoid side chain and biological activity, but can be converted to active vitamin K2, menaquinone, after alkylation in vivo.1,4-naphthoquinones;
vitamin K
angiogenesis inhibitor;
antineoplastic agent;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
human urinary metabolite;
nutraceutical
raloxifeneraloxifene : A member of the class of 1-benzothiophenes that is 1-benzothiophene in which the hydrogens at positions 2, 3, and 6 have been replaced by p-hydroxyphenyl, p-[2-(piperidin-1-yl)ethoxy]benzoyl, and hydroxy groups, respectively.1-benzothiophenes;
aromatic ketone;
N-oxyethylpiperidine;
phenols
bone density conservation agent;
estrogen antagonist;
estrogen receptor modulator
1,6-bis(cyclohexyloximinocarbonyl)hexane1,6-bis(cyclohexyloximinocarbonyl)hexane: selective inhibitor of canine platelet diglyceride lipasecarbamate ester;
organonitrogen compound
vorinostatvorinostat : A dicarboxylic acid diamide comprising suberic (octanedioic) acid coupled to aniline and hydroxylamine. A histone deacetylase inhibitor, it is marketed under the name Zolinza for the treatment of cutaneous T cell lymphoma (CTCL).

Vorinostat: A hydroxamic acid and anilide derivative that acts as a HISTONE DEACETYLASE inhibitor. It is used in the treatment of CUTANEOUS T-CELL LYMPHOMA and SEZARY SYNDROME.
dicarboxylic acid diamide;
hydroxamic acid
antineoplastic agent;
apoptosis inducer;
EC 3.5.1.98 (histone deacetylase) inhibitor
5,5-dimethylhydantoin5,5-dimethylhydantoin: RN given refers to parent cpdimidazolidine-2,4-dione
benzenesulfonamidesulfonamide
plumbaginplumbagin : A hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone in which the hydrogens at positions 2 and 5 are substituted by methyl and hydroxy groups, respectively.

plumbagin: a superoxide anion generator
hydroxy-1,4-naphthoquinone;
phenols
anticoagulant;
antineoplastic agent;
immunological adjuvant;
metabolite
wy 48252Wy 48252: leukotriene D4 antagonist
4-[1-[4-[2-(dimethylamino)ethoxy]phenyl]-2-phenylbut-1-enyl]phenolstilbenoid
spiroglumidespiroglumide: a CCK receptor antagonist; antigastrin; structure given in first source
3-octylthio-1,1,1-trifluoro-2-propanone3-octylthio-1,1,1-trifluoro-2-propanone: a pesticide synergist; inhibits juvenile hormone esterase
varespladibaromatic ether;
benzenes;
dicarboxylic acid monoamide;
indoles;
monocarboxylic acid;
primary carboxamide
anti-inflammatory drug;
antidote;
EC 3.1.1.4 (phospholipase A2) inhibitor
tamoxifenstilbenoid;
tertiary amino compound
angiogenesis inhibitor;
antineoplastic agent;
bone density conservation agent;
EC 1.2.3.1 (aldehyde oxidase) inhibitor;
EC 2.7.11.13 (protein kinase C) inhibitor;
estrogen antagonist;
estrogen receptor antagonist;
estrogen receptor modulator
orlistatorlistat : A carboxylic ester resulting from the formal condensation of the carboxy group of N-formyl-L-leucine with the hydroxy group of (3S,4S)-3-hexyl-4-[(2S)-2-hydroxytridecyl]oxetan-2-one. A pancreatic lipase inhibitor, it is used as an anti-obesity drug.

Orlistat: A lactone derivative of LEUCINE that acts as a pancreatic lipase inhibitor to limit the absorption of dietary fat; it is used in the management of obesity.
beta-lactone;
carboxylic ester;
formamides;
L-leucine derivative
anti-obesity agent;
bacterial metabolite;
EC 2.3.1.85 (fatty acid synthase) inhibitor;
EC 3.1.1.3 (triacylglycerol lipase) inhibitor
arachidonyltrifluoromethaneAACOCF3 : A fatty acid derivative that is arachidonic acid in which the OH part of the carboxy group has been replaced by a trifluoromethyl group

arachidonyltrifluoromethane: structure given in first source; inhibits 85-kDa phospholipase A2
fatty acid derivative;
ketone;
olefinic compound;
organofluorine compound
EC 3.1.1.4 (phospholipase A2) inhibitor
amentoflavonebiflavonoid;
hydroxyflavone;
ring assembly
angiogenesis inhibitor;
antiviral agent;
cathepsin B inhibitor;
P450 inhibitor;
plant metabolite
ochnaflavoneochnaflavone : A biflavonoid with an ether linkage between the B-rings of the apigenin and luteolin subunits. It has been isolated from several members of the Ochnaceae plant family.

ochnaflavone: from Lonicera japonica; structure given in first source
aromatic ether;
biflavonoid;
hydroxyflavone
anti-inflammatory agent;
antiatherogenic agent;
antibacterial agent;
EC 3.1.1.4 (phospholipase A2) inhibitor;
leukotriene antagonist;
plant metabolite
manoalidemanoalide : A sesterterpenoid isolated from the marine sponge Luffariella variabilis and which has been shown to exhibit inhibitory activity towards phospholipase A2.

manoalide: phospholipase A2 inhibitor; sesterterpene from marine sponge L. variabilis; structure given in first source
butenolide;
lactol;
sesterterpenoid
EC 3.1.1.4 (phospholipase A2) inhibitor;
EC 5.99.1.2 (DNA topoisomerase) inhibitor;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
metabolite
ym 26734YM 26734: inhibits group II phospholipase A2; structure given in first source
indoxamindoxam: structure in first source
darapladibdarapladib: a selective lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) inhibitor, on biomarkers of cardiovascular (CV) risk
sb-435495SB-435495: structure in first source
methyl arachidonylfluorophosphonatephosphonic ester
humaninhumanin: suppresses neuronal cell death induced by the Swedish mutant of amyloid precursor protein; suppresses neuronal cell death induced by three different types of FAD genes and amyloid beta; amino acid sequence in first source
14-methyl-20-oxa-5,7,14,26-tetraazatetracyclo(19.3.1.1(2,6).1(8,12))heptacosa-1(25),2(26),3,5,8(27),9,11,16,21,23-decaene14-methyl-20-oxa-5,7,14,26-tetraazatetracyclo(19.3.1.1(2,6).1(8,12))heptacosa-1(25),2(26),3,5,8(27),9,11,16,21,23-decaene: has antineoplastic activity; also inhibits Fms-like tyrosine kinase-3; structure in first source