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phosphatidic acid/dental caries
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Página 1 desde 23 resultados
Identification of novel phosphatidic acid binding domain on sphingosine kinase 1 of Arabidopsis thaliana.
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Phosphatidic acid (PA) is an important lipid signaling molecule which interacts with Arabidopsis thaliana Sphingosine kinase1 (AtSPHK1) during several abiotic stresses particularly drought stress as a result of Abscisic acid (ABA) signaling in guard cells. PA molecules respond by generating lipid
Arachidonate metabolic pathways in cells harvested from rat pleural cavity at various times after carrageenan administration.
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Cells were harvested from rat pleural cavity before and during the inflammatory response stimulated by carrageenan injection. The conversion of [14C]arachidonate by intact cells into products of the cyclooxygenase and 5-lipoxygenase pathways was studied in the absence and presence of ionophore.
A phosphatidic acid-binding protein is important for lipid homeostasis and adaptation to anaerobic biofilm conditions in Pseudomonas aeruginosa.
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A quantitative Pseudomonas aeruginosa proteomics approach revealed increased abundance of the so-far uncharacterized protein PA3911 in anaerobic biofilms grown under conditions of the cystic fibrosis lung. Physiological relevance of ORF PA3911 was demonstrated, inter alia, using phenotype microarray
Inhibition of the plasma glycosylphosphatidylinositol-specific phospholipase D by synthetic analogs of lipid A and phosphatidic acid.
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Glycosylphosphatidylinositol-specific phospholipase D (GPI-PLD), a plasma enzyme with extensive sequence similarity to integrin alpha subunits, is inhibited by micromolar concentrations of lipid A, phosphatidic acid (PA) and lysophosphatidic acid (M. G. Low and K.-S. Huang, J. Biol. Chem. 268,
Phosphatidylinositol transfer protein, cytoplasmic 1 (PITPNC1) binds and transfers phosphatidic acid.
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Phosphatidylinositol transfer proteins (PITPs) are versatile proteins required for signal transduction and membrane traffic. The best characterized mammalian PITPs are the Class I PITPs, PITPα (PITPNA) and PITPβ (PITPNB), which are single domain proteins with a hydrophobic cavity that binds a
RdgBα reciprocally transfers PA and PI at ER-PM contact sites to maintain PI(4,5)P2 homoeostasis during phospholipase C signalling in Drosophila photoreceptors.
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Phosphatidylinositol (PI) is the precursor lipid for the synthesis of PI 4,5-bisphosphate [PI(4,5)P2] at the plasma membrane (PM) and is sequentially phosphorylated by the lipid kinases, PI 4-kinase and phosphatidylinositol 4-phosphate (PI4P)-5-kinase. Receptor-mediated hydrolysis of PI(4,5)P2 takes
Temperature-dependent effects of cholesterol on sodium transport through lipid membranes by an ionizable mobile carrier.
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Temperature-jump relaxation experiments on Na+ transport by (221)C10-cryptand were carried out in order to study the influence of cholesterol and its temperature-dependence on ion transport through thin lipid membranes. The experiments were performed on large, negatively charged unilamellar vesicles
Anionic lipid and cholesterol interactions with alpha4beta2 nAChR: insights from MD simulations.
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Anionic lipids and cholesterols (CHOL) are critical to the function of nicotinic acetylcholine receptors (nAChR). We investigated their interactions with an open- and closed-channel alpha4beta2 nAChR by over 10 ns molecular dynamics simulations in a ternary lipid mixture of 1-palmitoyl-2-oleoyl
A major role for phospholipase A2 in antigen-induced arachidonic acid release in rat mast cells.
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Cross-linking of IgE receptors by antigen stimulation leads to histamine release and arachidonic acid release in rat peritoneal mast cells. Investigators have reported a diverse distribution of [3H]arachidonate that is dependent on labelling conditions. Mast cells from rat peritoneal cavity were
The turnover of molecular species of phosphatidylinositol in Ehrlich ascites tumor cells.
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It has been shown previously the 32Pi is incorporated into phosphatidylinositol 30 times faster than into the other phospholipids classes in Ehrlich ascites tumor cells, whereas [1-14C] glycerol is incorporated at almost the same rate (Waku, K., Nakazawa, Y. and MOri, W. (1976) J. Biochem. 79,
Regulation of neutral cholesterol esterase activity by phospholipids containing negative charges in substrate liposome.
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The effect of phospholipids on cholesteryl ester hydrolysis by neutral cholesterol esterase in alveolar macrophages was studied. Among the phospholipids used as emulsifiers, those with a negative charge, such as phosphatidylserine, phosphatidic acid, phosphatidylinositol, and cardiolipin, gave a
The effect of positive and negative pH-gradients on the stability of small unilamellar vesicles of negatively charged phospholipids.
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The stability of small unilamellar vesicles (SUV) made from negatively-charged phosphatidate by ultrasonication or pH-jump has been investigated. As criteria for the vesicle stability are used: (I) the bilayer integrity as judged from the permeability of the fluorescent probe carboxyfluorescein (CF)
Structure/activity relationship of thapsigargin inhibition on the purified Golgi/secretory pathway Ca2+/Mn2+-transport ATPase (SPCA1a).
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The Golgi/secretory pathway Ca2+/Mn2+-transport ATPase (SPCA1a) is implicated in breast cancer and Hailey-Hailey disease. Here, we purified recombinant human SPCA1a from Saccharomyces cerevisiae and measured Ca2+-dependent ATPase activity following reconstitution in proteoliposomes. The purified
Effects of surface-active compounds on the demineralization of dental enamel.
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Slices of bovine enamel and intact human enamel were treated with (a) a two-step treatment consisting of phytate followed by hexadecyl amine, or (b) 2-O-stearoylglycerol-1,3-diphosphate (Glydip), or (c) phosphatidic acid. The effect of these agents on the rate of caries lesion formation and on the
Influence of calcium, cholesterol, and unsaturation on lecithin monolayers.
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Surface pressures and potentials of mixed monolayers of dicetyl phosphate-cholesterol, dipalmitoyl lecithin-cholesterol, egg lecithin-cholesterol, and phosphatidic acid-cholesterol were measured. The surface potential is shown to be a more reliable parameter for the study of interactions in
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