Enzymes
| UniProtKB help_outline | 5 proteins |
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- Name help_outline 1-hexadecanoyl-sn-glycero-3-phosphocholine Identifier CHEBI:72998 (CAS: 14863-27-5) help_outline Charge 0 Formula C24H50NO7P InChIKeyhelp_outline ASWBNKHCZGQVJV-HSZRJFAPSA-N SMILEShelp_outline [C@@H](COC(=O)CCCCCCCCCCCCCCC)(COP(OCC[N+](C)(C)C)(=O)[O-])O 2D coordinates Mol file for the small molecule Search links Involved in 77 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine Identifier CHEBI:73004 Charge 0 Formula C21H44NO7P InChIKeyhelp_outline YVYMBNSKXOXSKW-HXUWFJFHSA-N SMILEShelp_outline [C@@H](COC(=O)CCCCCCCCCCCCCCC)(COP(OCC[NH3+])(=O)[O-])O 2D coordinates Mol file for the small molecule Search links Involved in 21 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 1,2-dihexadecanoyl-sn-glycero-3-phosphoethanolamine Identifier CHEBI:73005 Charge 0 Formula C37H74NO8P InChIKeyhelp_outline SLKDGVPOSSLUAI-PGUFJCEWSA-N SMILEShelp_outline [C@](COC(=O)CCCCCCCCCCCCCCC)(OC(=O)CCCCCCCCCCCCCCC)([H])COP(OCC[NH3+])(=O)[O-] 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline sn-glycerol 3-phosphocholine Identifier CHEBI:16870 (Beilstein: 6062450; CAS: 28319-77-9) help_outline Charge 0 Formula C8H20NO6P InChIKeyhelp_outline SUHOQUVVVLNYQR-MRVPVSSYSA-N SMILEShelp_outline C[N+](C)(C)CCOP([O-])(=O)OC[C@H](O)CO 2D coordinates Mol file for the small molecule Search links Involved in 42 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:40899 | RHEA:40900 | RHEA:40901 | RHEA:40902 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Characterization of the transacylase activity of rat liver 60-kDa lysophospholipase-transacylase. Acyl transfer from the sn-2 to the sn-1 position.
Sugimoto H., Yamashita S.
Rat liver 60-kDa lysophospholipase-transacylase catalyzes not only the hydrolysis of 1-acyl-sn-glycero-3-phosphocholine, but also the transfer of its acyl chain to a second molecule of 1-acyl-sn-glycero-3-phosphocholine to form phosphatidylcholine (H. Sugimoto, S. Yamashita, J. Biol. Chem. 269 (19 ... >> More
Rat liver 60-kDa lysophospholipase-transacylase catalyzes not only the hydrolysis of 1-acyl-sn-glycero-3-phosphocholine, but also the transfer of its acyl chain to a second molecule of 1-acyl-sn-glycero-3-phosphocholine to form phosphatidylcholine (H. Sugimoto, S. Yamashita, J. Biol. Chem. 269 (1994) 6252-6258). Here we report the detailed characterization of the transacylase activity of the enzyme. The enzyme mediated three types of acyl transfer between donor and acceptor lipids, transferring acyl residues from: (1) the sn-1 to -1(3); (2) sn-1 to -2; and (3) sn-2 to -1 positions. In the sn-1 to -1(3) transfer, the sn-1 acyl residue of 1-acyl-sn-glycero-3-phosphocholine was transferred to the sn-1(3) positions of glycerol and 2-acyl-sn-glycerol, producing 1(3)-acyl-sn-glycerol and 1,2-diacyl-sn-glycerol, respectively. In the sn-1 to -2 transfer, the sn-1 acyl residue of 1-acyl-sn-glycero-3-phosphocholine was transferred to not only the sn-2 positions of 1-acyl-sn-glycero-3-phosphocholine, but also 1-acyl-sn-glycero-3-phosphoethanolamine, producing phosphatidylcholine and phosphatidylethanolamine, respectively. 1-Acyl-sn-glycero-3-phospho-myo-inositol and 1-acyl-sn-glycero-3-phosphoserine were much less effectively transacylated by the enzyme. In the sn-2 to -1 transfer, the sn-2 acyl residue of 2-acyl-sn-glycero-3-phosphocholine was transferred to the sn-1 position of 2-acyl-sn-glycero-3-phosphocholine and 2-acyl-sn-glycero-3-phosphoethanolamine, producing phosphatidylcholine and phosphatidylethanolamine, respectively. Consistently, the enzyme hydrolyzed the sn-2 acyl residue from 2-acyl-sn-glycero-3-phosphocholine. By the sn-2 to -1 transfer activity, arachidonic acid was transferred from the sn-2 position of donor lipids to the sn-1 position of acceptor lipids, thus producing 1-arachidonoyl phosphatidylcholine. When 2-arachidonoyl-sn-glycero-3-phosphocholine was used as the sole substrate, diarachidonoyl phosphatidylcholine was synthesized at a rate of 0.23 micromol/min/mg protein. Thus, 60-kDa lysophospholipase-transacylase may play a role in the synthesis of 1-arachidonoyl phosphatidylcholine needed for important cell functions, such as anandamide synthesis. << Less
Biochim. Biophys. Acta 1438:264-272(1999) [PubMed] [EuropePMC]
This publication is cited by 11 other entries.
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Subcellular localization and lysophospholipase/transacylation activities of human group IVC phospholipase A2 (cPLA2gamma).
Yamashita A., Tanaka K., Kamata R., Kumazawa T., Suzuki N., Koga H., Waku K., Sugiura T.
cPLA2gamma was identified as an ortholog of cPLA2alpha, which is a key enzyme in eicosanoid production. cPLA2gamma was reported to be located in endoplasmic reticulum (ER) and mitochondria and to have lysophospholipase activity beside phospholipase A2 (PLA2) activity. However, subcellular localiza ... >> More
cPLA2gamma was identified as an ortholog of cPLA2alpha, which is a key enzyme in eicosanoid production. cPLA2gamma was reported to be located in endoplasmic reticulum (ER) and mitochondria and to have lysophospholipase activity beside phospholipase A2 (PLA2) activity. However, subcellular localization, mechanism of membrane binding, regulation and physiological function have not been fully established. In the present study, we examined the subcellular localization and enzymatic properties of cPLA2gamma with C-terminal FLAG-tag. We found that cPLA2gamma was located not only in ER but also mitochondria even in the absence of the prenylation. Purified recombinant cPLA2gamma catalyzed an acyltransferase reaction from one molecule of lysophosphatidylcholine (LPC) to another, forming phosphatidylcholine (PC). LPC or lysophosphatidylethanolamine acted as acyl donor and acceptor, but lysophosphatidylserine, lysophosphatidylinositol and lysophosphatidic acid (LPA) did not. PC and phosphatidylethanolamine (PE) also acted as weak acyl donors. Reaction conditions changed the balance of lysophospholipase and transacylation activities, with addition of LPA/PA, pH>8, and elevated temperature markedly increasing transacylation activity; this suggests that lysophospholipase/transacylation activities of cPLA2gamma may be regulated by various factors. As lysophospholipids are known to accumulate in ischemia heart and to induce arryhthmia, the cPLA2gamma that is abundant in heart may have a protective role through clearance of lysophospholipids by its transacylation activity. << Less
Biochim. Biophys. Acta 1791:1011-1022(2009) [PubMed] [EuropePMC]
This publication is cited by 10 other entries.