The inositol-containing phosphatides of soy beans have been the subject of a number of investigations (l-7) since 1939 when Klenk and Sakai (8) first reported the presence of inositol in soy bean phosphatides. Previous work at the Northern Regional Research Laboratory (3) has shown that the alcohol-insoluble portion of soy bean phosphatides can be separated into two inositol-containing fraction...

In barley, glycine betaine is a metabolic end product accumulated by wilted leaves; betaine accumulation involves acceleration of de novo synthesis from serine, via ethanolamine, N-methylethanolamines, choline, and betaine aldehyde (Hanson, Scott 1980 Plant Physiol 66: 342-348). Because in animals and microorganisms the N-methylation of ethanolamine involves phosphatide intermediates, and becau...

The lipid profiles of the brain in four cases of Nevin-Jones syndrome are described. A loss of phosphatidyl ethanolamine was found in both white matter and cortex in two cases as well as a more general loss of lipids in the cortex in one patient; there was a normal cerebrosidesulphatide ratio in myelin. These findings indicate a general loss of myelin over a period of time. The distribution of ...

The major hydrophobic fluorophore of the retinal pigment epithelium (RPE) is A2E, a pyridinium bis-retinoid derived from all-trans-retinal and phosphatidyl-ethanolamine. The accumulation of fluorophores such as A2E is implicated in the pathogenesis of age-related macular degeneration (AMD), a disease associated with the deterioration of central vision and a leading cause of blindness in the eld...

The novel phenomenon of fluorescence self-quenching was earlier discovered by us. It was observed in monolayers from fluorescently head labeled phospholipids, mainly Nitrobenzoxadiazole Dipalmitoyl Phosphatidyl Ethanolamine (DP-NBD-PE), at the air-liquid interface. Here we report that the morphology and film structure is preserved during Langmuir-Blodgett (LB) film transfer on the solid support...

By inoculating E. coli B into the semisynthetic medium we conducted shaking culture, and observed alterations of the total phospholipid contents and the amounts of individual phospholipid components in various stages of growth. The results are briefly summarized as follows. 1. The total phospholipid content has been found to be greater during early culture period, while it decreases as the grow...

Polar lipids are important membrane components of plant cells. They are known to affect certain membrane properties like permeability, fluidity and active transport. In the present study, individual leaf buds were tagged on the day of appearance and sampling began 7 days later. Additional samples were taken at 7 days intervals until leaf abscission occurred about 77 days after tagging. The expe...

1. Phospholipid content of brains of 3- or 8-week-old undernourished rats was 7--9% less than that for the corresponding control animals and this deficit could not be made up by rehabilitation. Phosphatidyl ethanolamine and plasmalogen were the components most affected in brains of undernourished rats. 2. Incorporation of 32P into phospholipids by brain homogenates was 28% higher in 3-week-old ...

When Euglena gracilis was grown under white (fluorescent) light in media containing high concentrations of ammonium chloride (more than 0.005%), the main lipids synthesized were monogalactosyl diglyceride, digalactosyl diglyceride, phosphatidyl glycerol, sulfolipid and the all eis 47,10-16:2, 47,10,13-16:3, Zl4,7,10,13-16:4, A9,12-18:2 and A9,12,15-18:3 fatty acids. At low levels of ammonium (l...