Ether phosphatides

Ethanolamine, pKa value of 99 Ethanolamine ammonia-lyase 871 Ether lipids 382 Ether phosphatides 383s Ethidium 223s Ethidium bromide 221, 222 Ethylenediamine, binding constants to metal ions 311... 

Animal and human organs contain ether-ester-, alkenyl ether-ester-and diester phosphatides, derived from ethanolamine or choline diether-and dialkenyl ether phosphatides may occur in smaller amounts. 

Besides the fatty aldehydes, the enol-ether phosphatides contain only unsaturated fatty acids and the base ethanolamine or choline. 

Fig. 14. Structure of the dialkyl ether phosphatide of Halobacterium cuti-...

Apply bands of sample solution, overspray with [35] 12% hydrochlonc acid, leave in an atmosphere of nitrogen for 2 imn and then dry in a stream of nitrogen, then chromatograph The vinyl ether linkages in the phosphatides are hydrolyzed... 

Plasmalogens are ether glycerophospholipids in which the alkyl moiety is d5-a,/3-unsaturated (Figure 8.10). Common plasmalogen head groups include choline, ethanolamine, and serine. These lipids are referred to as phosphati-dal choline, phosphatidal ethanolamine, and phosphatidal serine. 

Pettitt, T.R., Martin, A., Horton, T., liossis, C, Lord, J.M., and Wakelam M.J.O., 1997, Ehacyl-glycerol and phosphatidate generated by phospholipases C and D, respectively, have distinct fatty add compositions and functions. J. Biol. Chem. 272 17354 17359 Powis G., Seewald, M.J., Gratas, C., Melder, D., Riehow, J., and Modest, E.J., 1992, Selective inhibition of phosphatidyUnositol phosphohpase C by cytotoxic ether hpid analogs. Cancer Res. 52 2835-2840... 

Glycerophospholipids contain a glycerol skeleton to which two fatty acids are esterified saturated fatty acids occupy mostly sn-position 1, whereas unsaturated fatty acids are mainly present on sn-position 2. The third hydroxyl is linked to a phosphate group to which an organic base is mostly esterified (Fig. 1). The most important components of soybean lecithin are phosphatidylcholine (PC), phosphatidylethanolamine (PE), and phosphatidylinositol (PI). Phosphatidic acid (PA) may become important due to the presence of phospholipase D this enzyme slowly converts PC into PA in vegetable lecithins. Phosphatidylserine (PS), phosphatidylglycerol (PG), and lyso-phosphatidylcholine (LPC) are known as minor components lysophospholipids contain only one acyl group per molecule. Besides, ether phospholipids occur in which one or both fatty acyl... 

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