Autoradiography of phosphatidyl choline.

Cholesterol stimulation of phosphatidyl choline formation.

The conversion of ethanolamine to phosphatidyl choline was studied in liver slices from rats exix>sed to a high dietary intake of cholesterol in the presence of cholic acid. Cholesterol stimulated phosphatidyl choline formation per unit weight of liver tissue and increased the total liver muss thereby increasing further the total yield of phosphatidyl choline. These results are contrasted with ...

determination of phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl inositol and phosphatidic acid in different varieties of soybean cultivated in iran

introduction: crude vegetable oils contain some quantities of phospholipids. the highest concentration of phospholipids is usually found in crude soybean oil. the presence of phospholipids in the crude and refined oils create undesirable effects on the quality and quantity of the oil during refining operations or use by the consumer. however, if phospholipids are extracted properly from the oil...

Lipid monolayers: action of phospholipase A of Crotalus atrox and Naja naja venoms on phosphatidyl choline and phosphatidal choline.

The activity of phospholipase A on phosphatidyl choline and phosphatidal choline spread as monolayers on phosphate buffers containing snake venom (Crotalus atrox or Naja naja) was studied by measuring the fall of surface potential as a function of time, pH, film pressure, temperature, and concentrations of phosphate and venom. At 25 degrees C, pH 7.0, and 0.2 micrograms of venom per ml, optimal...

The hydrolysis of monolayers of phosphatidyl(Me-14C)choline by phospholipase D.

1. The hydrolysis of monolayers of phosphatidyl[Me-(14)C]choline at the air/water interface by phospholipase D (phosphatidylcholine phosphatidohydrolase) was investigated by a surface-radioactivity technique by using a flow counter. 2. Phosphatidylcholine of high specific radioactivity was prepared biosynthetically in good yield from [Me-(14)C]choline by using Saccharomyces cerevisiae. 3. At in...

Hereditary hemolytic anemia associated with abnormal membrane lipids: mechanism of accumulation of phosphatidyl choline.