Phosphatidic acid , a key intermediate in lipid metabolism
نویسندگان
چکیده
منابع مشابه
Phosphatidic acid phosphatase, a key enzyme in the regulation of lipid synthesis.
PA2 phosphatase (PAP3; 3-sn-phosphatidate phosphohydrolase, EC 3.1.3.4) catalyzes the Mg2 -dependent dephosphorylation of PA, yielding DAG and Pi (Fig. 1) (1–3). In de novo lipid synthesis, the DAG generated from the PAP reaction is utilized for the synthesis of the phospholipids PE and PC via the Kennedy pathway and for the synthesis of TAG (Fig. 1) (3). The enzyme substrate PA is also used fo...
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Lipins are phosphatidic acid phosphatases with a pivotal role in regulation of triglyceride and glycerophospholipid metabolism. Lipin1 is also an amplifier of PGC-1α, a nuclear coactivator of PPAR-α responsive gene transcription. Lipins do not contain recognized membrane-association domains, but interaction of these enzymes with cellular membranes is necessary for access to their phospholipid s...
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We determined that lisofylline, a potent inhibitor of oleate- and linoleate-containing phosphatidic acid formation (half-maximal inhibitory concentration = 40 nM), prevented oxidant-mediated capillary leak in isolated rat lungs given interleukin-8 (IL-8) intratracheally and perfused with human neutrophils. Lung leak was prevented by lung, but not neutrophil, lisofylline pretreatment. Furthermor...
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The lung contains two distinct forms of phosphatidic acid phosphatase (PAP). PAP1 is a cytosolic enzyme that is activated through fatty acid-induced translocation to the endoplasmic reticulum, where it converts phosphatidic acid (PA) to diacylglycerol (DAG) for the biosynthesis of phospholipids and neutral lipids. PAP1 is Mg(2+) dependent and sulfhydryl reagent sensitive. PAP2 is a six-transmem...
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Jiménez et al. (1) have published a thorough and impressive analysis of the genetic determinants of aerobic nicotinic acid degradation in Pseudomonas putida. The chemistry of this pathway has been known for some time (2) with the exception of the formation and hydrolysis of the (up to now) putative intermediate, N-formylmaleamic acid. These gaps were due to (i) difficulties in the synthesis of ...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1999
ISSN: 0014-2956,1432-1033
DOI: 10.1046/j.1432-1327.1999.00822.x