A synthesis of racemic diether analogues of glyceryl phosphatides is reported which is applicable to unsaturated aliphatic substituents. The "oleyl" diether analogue of phosphatidyl ethanolamine has been synthesized.

Lipid Group Colloquium Organized and Edited by D. C. Wilton (Department of Biochemistry, University of Southampton) and A. Postle (Department of Child Health, Southampton General Hospital) and Sponsored by Yamanouchi Research Institute, Sigma-Aldrich Company, British Biotechnology Group, Celltech Therapeutics, Micrornass (UK) and Pharrnacia and Upjohn. 665th Meeting held at Southampton, 3 I Mar...

Kiss Z. Lower primary school teacher trainees’ and pupils’ interactions on PE lessons. J. Hum. Sport Exerc. Vol. 8, No. Proc2, pp. S1-S9, 2013. Teaching activities on PE lessons are quite different from the ones on other lessons because of the interactions while teaching activities. One of the main characteristic features is that pupils answer the teacher with motor activity, so lesson work is ...

The translocation of lipids from the inner to the outer membrane of Escherichia coli has been investigated by pulse-chase experiments. After a pulse with [2-3H]glycerol, the specific activity of the newly synthesized [3H]phosphatidylethanolamine was 5 times greater in the inner than in the outer membrane. During the chase, [3H]phosphatidylethanolamine was translocated to the outer membrane. At ...

The interaction of Factor VIII-von Willebrand Factor with phospholipid vesicles has been studied by using sucrose-density-gradient ultracentrifugation. When purified Factor VIII-von Willebrand Factor was run alone. Factor VIII activity and Factor VIIIR-Ag sedimented together to the lower half of the tube. Addition of phosphatidylserine/phosphatidylethanolamine vesicles at concentrations above 2...

Resorcinolic lipids isolated from Anacardium occidentale nut oil extract (CNSL), unsaturated congeners of those isolated from bacterial and graminaceous sources, form at alkaline conditions liposomal structures alone as well as in the mixtures with cholesterol, fatty acids or phosphatidylethanolamine. Those vesicular structures show relatively high entrapment of the marker and stability of thei...

We have developed two procedures for the measurement of lipid phosphorus based on interaction between phosphomolybdenum and malachite green. One method, the "micro" assay uses 50-200 microliters of HClO4 and has a sensitivity range of 0.01-1.5 micrograms phosphorus. The second method, the "macro" assay, has a sensitivity range of 0.03-5.0 micrograms phosphorus with 100-500 microliters HClO4. Bo...

Most assays performed in chemistry and endocrinology laboratories have values ofsb which are non-zero with the ratio Sb/S, varying from 0.3 to 3 [2 and 3]. Westgard, Falk and Groth have recently used computer simulations to show how Sb and sw affected the performance characteristics ofvarious control rules [4 and 5]. Their simulations were based on a model that incorporated Sb, Sw and errors of...

In any lipid bilayer membrane, there is an upper limit on the cholesterol concentration that can be accommodated within the bilayer structure; excess cholesterol will precipitate as crystals of pure cholesterol monohydrate. This cholesterol solubility limit is a well-defined quantity. It is a first-order phase boundary in the phospholipid/cholesterol phase diagram. There are many different solu...

I consider a model of a bilayer characterized by two order parameters, one in each leaf. That of the inner leaf represents the difference in mole fractions of lipids with large spontaneous curvature, phosphatidylethanolamine (PE), and those with small spontaneous curvatures, phosphatidylcholine (PC) and phosphatidylserine (PS). Similarly, the order parameter in the outer leaf represents the dif...