| IED ID | IndEnz0010000023 |
| Enzyme Type ID | esterase000023 |
| Protein Name |
Platelet-activating factor acetylhydrolase PAF acetylhydrolase EC 3.1.1.47 1-alkyl-2-acetylglycerophosphocholine esterase 2-acetyl-1-alkylglycerophosphocholine esterase LDL-associated phospholipase A2 LDL-PLA 2 PAF 2-acylhydrolase |
| Gene Name | PLA2G7 PAFAH |
| Organism | Cavia porcellus (Guinea pig) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Metazoa Eumetazoa Bilateria Deuterostomia Chordata Craniata Vertebrata Gnathostomata (jawed vertebrates) Teleostomi Euteleostomi Sarcopterygii Dipnotetrapodomorpha Tetrapoda Amniota Mammalia Theria Eutheria Boreoeutheria Euarchontoglires Glires (Rodents and rabbits) Rodentia Hystricomorpha Caviidae (cavies) Cavia (guinea pigs) Cavia porcellus (Guinea pig) |
| Enzyme Sequence | MAPPKLHTLFCLSGFLALVHPFDWRDLDPVTYIQSSVWIQRIQSELLITSFGHTTIPKGNGPYSVGCTDLMSGYTNQSSFLRLYYPSQDNDFPDALWIPNEEYFQGLTETLGASSFLGKLLKLLYGSVKVPAKWNSPLKTGEKYPLIIFSHGLGAFRSIYSAIGIELASHGFIVAAVEHRDESAAATYYFQDAPAAESGNRSWIYYKVGNLETEERKRQLRQRGEECSQALSWLLSIDEGEPVKNVLDLNFDIQQLKGSLDRSKVAIIGHSFGGATVIQTLSEDQRFRCGIALDPWMFPVGEDVHSKIPQPLFFINSEYFQSANDTKKIEKFYQPQKERKMIAVKGSVHHNFVDFTFATGKIIGQMLSLKGKIDSEVAMDLINKASLAFLQKYLGLDKNFDQWNSLMEGDDENLIPEFTIPTTMQSSTGTEQRNPD |
| Enzyme Length | 436 |
| Uniprot Accession Number | P70683 |
| Absorption | |
| Active Site | ACT_SITE 271; /note=Nucleophile; /evidence=ECO:0000250; ACT_SITE 294; /note=Charge relay system; /evidence=ECO:0000255|PROSITE-ProRule:PRU10037; ACT_SITE 349; /note=Charge relay system; /evidence=ECO:0000255|PROSITE-ProRule:PRU10037 |
| Activity Regulation | |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=a 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-alkyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:17777, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:30909, ChEBI:CHEBI:36707; EC=3.1.1.47; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:17778; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-O-decyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-decyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:41376, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:78108, ChEBI:CHEBI:78109; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41377; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-O-dodecyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-dodecyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:41372, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:78103, ChEBI:CHEBI:78104; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41373; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-O-tetradecyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-tetradecyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:41368, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:78101, ChEBI:CHEBI:78102; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41369; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-O-hexadecyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-hexadecyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:40479, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:44811, ChEBI:CHEBI:64496; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:40480; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-O-octadecyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-O-octadecyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:41183, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:52450, ChEBI:CHEBI:75216; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41184; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-acetyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + acetate + H(+); Xref=Rhea:RHEA:41203, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30089, ChEBI:CHEBI:72998, ChEBI:CHEBI:75219; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41204; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-propionyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + propanoate; Xref=Rhea:RHEA:41191, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17272, ChEBI:CHEBI:72998, ChEBI:CHEBI:77831; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41192; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-butanoyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + butanoate + H(+); Xref=Rhea:RHEA:41195, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17968, ChEBI:CHEBI:72998, ChEBI:CHEBI:77832; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41196; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-pentanoyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + pentanoate; Xref=Rhea:RHEA:41199, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:31011, ChEBI:CHEBI:72998, ChEBI:CHEBI:77833; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41200; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-glutaroyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + glutarate + H(+); Xref=Rhea:RHEA:41159, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30921, ChEBI:CHEBI:72998, ChEBI:CHEBI:77756; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41160; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-(5-oxopentanoyl)-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + 5-oxopentanoate + H(+); Xref=Rhea:RHEA:40483, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:16120, ChEBI:CHEBI:72998, ChEBI:CHEBI:77890; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:40484; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-(9-oxononanoyl)-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + 9-oxononanoate + H(+); Xref=Rhea:RHEA:41179, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:61042, ChEBI:CHEBI:72998, ChEBI:CHEBI:77812; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41180; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-[9-hydroperoxy-(10E-octadecenoyl)]-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + 9-hydroperoxy-10E-octadecenoate + H(+); Xref=Rhea:RHEA:41151, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:72998, ChEBI:CHEBI:77753, ChEBI:CHEBI:77754; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41152; Evidence={ECO:0000250|UniProtKB:Q13093}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-(10-hydroperoxy-8E-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + 10-hydroperoxy-8E-octadecenoate + H(+); Xref=Rhea:RHEA:41155, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:72998, ChEBI:CHEBI:77749, ChEBI:CHEBI:77755; Evidence={ECO:0000250|UniProtKB:Q13093};PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41156; Evidence={ECO:0000250|UniProtKB:Q13093}; |
| DNA Binding | |
| EC Number | 3.1.1.47 |
| Enzyme Function | FUNCTION: Lipoprotein-associated calcium-independent phospholipase A2 involved in phospholipid catabolism during inflammatory and oxidative stress response (By similarity). At the lipid-aqueous interface, hydrolyzes the ester bond of fatty acyl group attached at sn-2 position of phospholipids (phospholipase A2 activity) (By similarity). Specifically targets phospholipids with a short-chain fatty acyl group at sn-2 position. Can hydrolyze phospholipids with long fatty acyl chains, only if they carry oxidized functional groups (By similarity). Hydrolyzes and inactivates platelet-activating factor (PAF, 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine), a potent pro-inflammatory signaling lipid that acts through PTAFR on various innate immune cells (By similarity). Hydrolyzes oxidatively truncated phospholipids carrying an aldehyde group at omega position, preventing their accumulation in lipoprotein particles and uncontrolled pro-inflammatory effects (By similarity). As part of high-density lipoprotein (HDL) particles, can hydrolyze phospholipids having long-chain fatty acyl hydroperoxides at sn-2 position and protect against potential accumulation of these oxylipins in the vascular wall (By similarity). Catalyzes the release from membrane phospholipids of F2-isoprostanes, lipid biomarkers of cellular oxidative damage (By similarity). {ECO:0000250|UniProtKB:Q13093}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | |
| Features | Active site (3); Chain (1); Glycosylation (3); Signal peptide (1) |
| Keywords | Glycoprotein;HDL;Hydrolase;Lipid degradation;Lipid metabolism;Phospholipid degradation;Phospholipid metabolism;Reference proteome;Secreted;Signal |
| Interact With | |
| Induction | |
| Subcellular Location | SUBCELLULAR LOCATION: Secreted, extracellular space {ECO:0000250|UniProtKB:Q60963}. Note=Associates with HDL particles in plasma. {ECO:0000250|UniProtKB:Q60963}. |
| Modified Residue | |
| Post Translational Modification | PTM: N-glycosylated. {ECO:0000250|UniProtKB:Q13093}. |
| Signal Peptide | SIGNAL 1..21; /evidence=ECO:0000250 |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 49,063 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | RHEA:17777; RHEA:17778; RHEA:41376; RHEA:41377; RHEA:41372; RHEA:41373; RHEA:41368; RHEA:41369; RHEA:40479; RHEA:40480; RHEA:41183; RHEA:41184; RHEA:41203; RHEA:41204; RHEA:41191; RHEA:41192; RHEA:41195; RHEA:41196; RHEA:41199; RHEA:41200; RHEA:41159; RHEA:41160; RHEA:40483; RHEA:40484; RHEA:41179; RHEA:41180; RHEA:41151; RHEA:41152; RHEA:41155; RHEA:41156 |
| Cross Reference Brenda |