PLA2G4A

Cytosolic phospholipase A₂ is an enzyme that in humans is encoded by the PLA2G4A gene.^[5][6]

PLA2G4A
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1BCI, 1CJY, 1RLW
Identifiers
Aliases	PLA2G4A, PLA2G4, cPLA2-alpha, cPLA2, phospholipase A2 group IVA, GURDP
External IDs	OMIM: 600522; MGI: 1195256; HomoloGene: 32059; GeneCards: PLA2G4A; OMA:PLA2G4A - orthologs
Gene location (Human) Chr. Chromosome 1 (human)[1] Band 1q31.1 Start 186,828,949 bp[1] End 186,988,981 bp[1]
Gene location (Mouse) Chr. Chromosome 1 (mouse)[2] Band 1 G1|1 63.51 cM Start 149,705,369 bp[2] End 149,837,041 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in seminal vesicula cartilage tissue right uterine tube urinary bladder caput epididymis mucosa of urinary bladder germinal epithelium Achilles tendon parietal pleura jejunal mucosa Top expressed in epithelium of lens mucous cell of stomach urothelium cervix epithelium of stomach transitional epithelium of urinary bladder Paneth cell cumulus cell gastrula iris More reference expression data BioGPS More reference expression data
Gene ontology Molecular function metal ion binding calcium ion binding hydrolase activity calcium-dependent phospholipid binding phospholipase activity phospholipase A2 activity phospholipase A1 activity lysophospholipase activity calcium-dependent phospholipase A2 activity Cellular component Golgi apparatus endoplasmic reticulum endoplasmic reticulum membrane cytoplasmic vesicle mitochondrial inner membrane cytoplasm lipid droplet cytosol nucleus Biological process phospholipid metabolic process phosphatidylinositol acyl-chain remodeling platelet activating factor biosynthetic process arachidonic acid secretion icosanoid metabolic process lipid metabolism phosphatidylserine acyl-chain remodeling phospholipid catabolic process phosphatidylglycerol acyl-chain remodeling cellular response to antibiotic lipid catabolic process phosphatidic acid biosynthetic process phosphatidylcholine acyl-chain remodeling metabolism regulation of cell population proliferation phosphatidylethanolamine acyl-chain remodeling cardiolipin acyl-chain remodeling icosanoid biosynthetic process arachidonic acid metabolic process glycerophospholipid catabolic process Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 5321 18783 Ensembl ENSG00000116711 ENSMUSG00000056220 UniProt P47712 P47713 RefSeq (mRNA) NM_001311193 NM_024420 NM_008869 NM_001305632 RefSeq (protein) NP_001298122 NP_077734 NP_001292561 NP_032895 Location (UCSC) Chr 1: 186.83 – 186.99 Mb Chr 1: 149.71 – 149.84 Mb PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Function

This gene encodes a member of the cytosolic phospholipase A₂ group IV family. The enzyme catalyzes the hydrolysis of membrane phospholipids to release arachidonic acid which is subsequently metabolized into eicosanoids. Eicosanoids, including prostaglandins and leukotrienes, are lipid-based cellular hormones that regulate hemodynamics, inflammatory responses, and other intracellular pathways. The hydrolysis reaction also produces lysophospholipids that are converted into platelet-activating factor. The enzyme is activated by increased intracellular Ca²⁺ levels and phosphorylation, resulting in its translocation from the cytosol and nucleus to perinuclear membrane vesicles.^[6]

Interactions

PLA2G4A has been shown to interact with histone acetyltransferase KAT5.^[7]

Clinical significance

Mutations in this gene have been associated with multifocal stenosing ulceration of the small intestine.^[8]

References

1. GRCh38: Ensembl release 89: ENSG00000116711 – Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000056220 – Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. Dennis EA (Jun 1994). "Diversity of group types, regulation, and function of phospholipase A2". Journal of Biological Chemistry. 269 (18): 13057–13060. doi:10.1016/S0021-9258(17)36794-7. PMID 8175726.
6. "Entrez Gene: PLA2G4A phospholipase A2, group IVA (cytosolic, calcium-dependent)".
7. Sheridan AM, Force T, Yoon HJ, O'Leary E, Choukroun G, Taheri MR, Bonventre JV (July 2001). "PLIP, a novel splice variant of Tip60, interacts with group IV cytosolic phospholipase A(2), induces apoptosis, and potentiates prostaglandin production". Molecular and Cellular Biology. 21 (14): 4470–4481. doi:10.1128/MCB.21.14.4470-4481.2001. PMC 87107. PMID 11416127.
8. Brooke MA, Longhurst HJ, Plagnol V, Kirkby NS, Mitchell JA, Rüschendorf F, Warner TD, Kelsell DP, Macdonald TT (December 2012). "Cryptogenic multifocal ulcerating stenosing enteritis associated with homozygous deletion mutations in cytosolic phospholipase A2-α". Gut. 63 (1): 96–104. doi:10.1136/gutjnl-2012-303581. PMID 23268370. S2CID 206957682.

Further reading

• Schröder HC, Perovic S, Kavsan V, et al. (1998). "Mechanisms of prionSc- and HIV-1 gp120 induced neuronal cell death". Neurotoxicology. 19 (4–5): 683–688. PMID 9745929.
• Hirabayashi T, Murayama T, Shimizu T (2005). "Regulatory mechanism and physiological role of cytosolic phospholipase A2". Biological and Pharmaceutical Bulletin. 27 (8): 1168–1173. doi:10.1248/bpb.27.1168. PMID 15305015.
• Law MH, Cotton RG, Berger GE (2006). "The role of phospholipases A2 in schizophrenia". Molecular Psychiatry. 11 (6): 547–556. doi:10.1038/sj.mp.4001819. PMID 16585943.
• Shimizu T, Ohto T, Kita Y (2006). "Cytosolic phospholipase A2: biochemical properties and physiological roles". IUBMB Life. 58 (5–6): 328–333. doi:10.1080/15216540600702289. PMID 16754327. S2CID 36287675.
• Sharp JD, White DL, Chiou XG, et al. (1991). "Molecular cloning and expression of human Ca(2+)-sensitive cytosolic phospholipase A2". Journal of Biological Chemistry. 266 (23): 14850–14853. doi:10.1016/S0021-9258(18)98550-9. PMID 1869522.
• Clark JD, Lin LL, Kriz RW, et al. (1991). "A novel arachidonic acid-selective cytosolic PLA2 contains a Ca(2+)-dependent translocation domain with homology to PKC and GAP". Cell. 65 (6): 1043–1051. doi:10.1016/0092-8674(91)90556-E. PMID 1904318. S2CID 134332.
• Tay A, Simon JS, Squire J, et al. (1995). "Cytosolic phospholipase A2 gene in human and rat: chromosomal localization and polymorphic markers". Genomics. 26 (1): 138–141. doi:10.1016/0888-7543(95)80093-2. PMID 7782073.
• Wu T, Ikezono T, Angus CW, Shelhamer JH (1995). "Characterization of the promoter for the human 85 kDa cytosolic phospholipase A2 gene". Nucleic Acids Research. 22 (23): 5093–5098. doi:10.1093/nar/22.23.5093. PMC 523783. PMID 7800505.
• Miyashita A, Crystal RG, Hay JG (1995). "Identification of a 27 bp 5'-flanking region element responsible for the low level constitutive expression of the human cytosolic phospholipase A2 gene". Nucleic Acids Research. 23 (2): 293–301. doi:10.1093/nar/23.2.293. PMC 306668. PMID 7862535.
• Morri H, Ozaki M, Watanabe Y (1995). "5'-flanking region surrounding a human cytosolic phospholipase A2 gene". Biochemical and Biophysical Research Communications. 205 (1): 6–11. doi:10.1006/bbrc.1994.2621. PMID 7999086.
• Sharp JD, Pickard RT, Chiou XG, et al. (1994). "Serine 228 is essential for catalytic activities of 85-kDa cytosolic phospholipase A2". Journal of Biological Chemistry. 269 (37): 23250–23254. doi:10.1016/S0021-9258(17)31645-9. PMID 8083230.
• Lin LL, Wartmann M, Lin AY, et al. (1993). "cPLA2 is phosphorylated and activated by MAP kinase". Cell. 72 (2): 269–78. doi:10.1016/0092-8674(93)90666-E. PMID 8381049. S2CID 1500909.
• Flati V, Haque SJ, Williams BR (1996). "Interferon-alpha-induced phosphorylation and activation of cytosolic phospholipase A2 is required for the formation of interferon-stimulated gene factor three". EMBO Journal. 15 (7): 1566–1571. doi:10.1002/j.1460-2075.1996.tb00501.x. PMC 450066. PMID 8612580.
• de Carvalho MG, McCormack AL, Olson E, et al. (1996). "Identification of phosphorylation sites of human 85-kDa cytosolic phospholipase A2 expressed in insect cells and present in human monocytes". Journal of Biological Chemistry. 271 (12): 6987–6997. doi:10.1074/jbc.271.12.6987. PMID 8636128.
• Freed KA, Moses EK, Brennecke SP, Rice GE (1997). "Differential expression of type II, IV and cytosolic PLA2 messenger RNA in human intrauterine tissues at term". Molecular Human Reproduction. 3 (6): 493–499. doi:10.1093/molehr/3.6.493. PMID 9239738.
• Mavoungou E, Georges-Courbot MC, Poaty-Mavoungou V, et al. (1997). "HIV and SIV envelope glycoproteins induce phospholipase A2 activation in human and macaque lymphocytes". Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology. 16 (1): 1–9. doi:10.1097/00042560-199709010-00001. PMID 9377118.
• Perisic O, Fong S, Lynch DE, et al. (1998). "Crystal structure of a calcium-phospholipid binding domain from cytosolic phospholipase A2". Journal of Biological Chemistry. 273 (3): 1596–1604. doi:10.1074/jbc.273.3.1596. PMID 9430701.
• Börsch-Haubold AG, Bartoli F, Asselin J, et al. (1998). "Identification of the phosphorylation sites of cytosolic phospholipase A2 in agonist-stimulated human platelets and HeLa cells". Journal of Biological Chemistry. 273 (8): 4449–4458. doi:10.1074/jbc.273.8.4449. PMID 9468497.