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- Name help_outline 1-octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine Identifier CHEBI:75026 Charge 0 Formula C42H84NO8P InChIKeyhelp_outline BYSIMVBIJVBVPA-RRHRGVEJSA-N SMILEShelp_outline C(C[N+](C)(C)C)OP(=O)([O-])OC[C@H](OC(CCCCCCCCCCCCCCC)=O)COC(=O)CCCCCCCCCCCCCCCCC 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 H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 2-hexadecanoyl-sn-glycero-3-phosphocholine Identifier CHEBI:76078 Charge 0 Formula C24H50NO7P InChIKeyhelp_outline NEGQHKSYEYVFTD-HSZRJFAPSA-N SMILEShelp_outline CCCCCCCCCCCCCCCC(=O)O[C@H](CO)COP([O-])(=O)OCC[N+](C)(C)C 2D coordinates Mol file for the small molecule Search links Involved in 13 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,176 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline octadecanoate Identifier CHEBI:25629 (Beilstein: 3590530; CAS: 646-29-7) help_outline Charge -1 Formula C18H35O2 InChIKeyhelp_outline QIQXTHQIDYTFRH-UHFFFAOYSA-M SMILEShelp_outline C(CCCCCCCCCC)CCCCCCC(=O)[O-] 2D coordinates Mol file for the small molecule Search links Involved in 38 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:56444 | RHEA:56445 | RHEA:56446 | RHEA:56447 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Structure/Function relationships of adipose phospholipase A2 containing a cys-his-his catalytic triad.
Pang X.Y., Cao J., Addington L., Lovell S., Battaile K.P., Zhang N., Rao J.L., Dennis E.A., Moise A.R.
Adipose phospholipase A(2) (AdPLA or Group XVI PLA(2)) plays an important role in the onset of obesity by suppressing adipose tissue lipolysis. As a consequence, AdPLA-deficient mice are resistant to obesity induced by a high fat diet or leptin deficiency. It has been proposed that AdPLA mediates ... >> More
Adipose phospholipase A(2) (AdPLA or Group XVI PLA(2)) plays an important role in the onset of obesity by suppressing adipose tissue lipolysis. As a consequence, AdPLA-deficient mice are resistant to obesity induced by a high fat diet or leptin deficiency. It has been proposed that AdPLA mediates its antilipolytic effects by catalyzing the release of arachidonic acid. Based on sequence homology, AdPLA is part of a small family of acyltransferases and phospholipases related to lecithin:retinol acyltransferase (LRAT). To better understand the enzymatic mechanism of AdPLA and LRAT-related proteins, we solved the crystal structure of AdPLA. Our model indicates that AdPLA bears structural similarity to proteins from the NlpC/P60 family of cysteine proteases, having its secondary structure elements configured in a circular permutation of the classic papain fold. Using both structural and biochemical evidence, we demonstrate that the enzymatic activity of AdPLA is mediated by a distinctive Cys-His-His catalytic triad and that the C-terminal transmembrane domain of AdPLA is required for the interfacial catalysis. Analysis of the enzymatic activity of AdPLA toward synthetic and natural substrates indicates that AdPLA displays PLA(1) in addition to PLA(2) activity. Thus, our results provide insight into the enzymatic mechanism and biochemical properties of AdPLA and LRAT-related proteins and lead us to propose an alternate mechanism for AdPLA in promoting adipose tissue lipolysis that is not contingent on the release of arachidonic acid and that is compatible with its combined PLA(1)/A(2) activity. << Less
J. Biol. Chem. 287:35260-35274(2012) [PubMed] [EuropePMC]
This publication is cited by 9 other entries.