S PERMATOZOA from the caput, corpus and cauda epididymis and ejaculated sperm were analyzed for their phospholipid and phospholipid fatty acid content. Caput spermatozoa contained 16 and 34% more total phospholipid than sperm from the corpus and cauda epididymis, respectively. Caudal sperm were similar to ejaculated sperm in phospholipid content. Seminal plasma from ejaculated semen collected a...

Factor VIII, a protein cofactor involved in blood coagulation, functions in vitro on a phospholipid membrane surface to greatly increase the rate of factor X activation by factor IXa. Using gel filtration, rapid sedimentation, and resonance energy transfer we have studied the interaction of recombinant-derived human factor VIII with small and large unilamellar phospholipid vesicles composed of ...

Discontinuous increases in the net accumulation of cellular phospholipid were previously observed during the synchronous growth of Rhodopseudomonas sphaeroides (Lueking, D. R., Fraley, R. T., and Kaplan, S. (1978) J. Biol. Chem. 253, 451-457). This pattern is shown to result from large increases in the rate of phospholipid synthesis, occurring just prior to cell division. The absence of detecta...

An anomaly in the plasma proteins of patients with multiple sclerosis detectable on SDS-PAGE has been reported. The molecular weight of the anomaly was the same as the phospholipid transfer protein. A metabolic protein was involved in lipid homeostasis and remodeling of the high density lipoproteins. We have identified the anomaly as the phospholipid transfer protein by western blot using antip...

thermodynamic features related to preparation and use of self-assemblies formed between multilamellar and unilamellar zwitterionic liposomes and polynucleotides with various conformation and sizes are presented. the divalent metal cation or surfactant-induced adsorption, aggregation and adhesion between single- and double-stranded polyribonucleotides and phosphatidylcholine vesicles was followe...

Phospholipid behavior in bovine retinal rod outer segment disk membranes and in phosphatidylcholine membranes containing the photopigment rhodopsin is explored. 31P NMR spectra of these systems show two distinguishable resonances. One resembles closely the 31P NMR resonance normally obtained from phospholipid bilayers. The other resonance is much broader. Thus, there appear to be two phospholip...

Nanoscale membrane deformations are believed to act as signaling hubs that combine geometry and lipid composition. We propose an in vitro platform for curvature sensitive protein screening using nanoparticles with phospholipid patterned on top.

27 It has been known for almost 25 years now that inclusion of intact phospholipids in the diet could 28 improve culture performance of various freshwater and marine fish species. The primary 29 beneficial effect was improved growth in both larvae and early juveniles, but also increased 30 survival rates and decreased incidence of malformation in larvae, and perhaps increased stress 31 resistan...

the effect of anti-follicular stimulating hormone (fsh) on testicular lipid and the specific activity of testicular enzymes of the isocitrate dehydrogenase (icdh), pyruvate/malate dehydrogenase (mdh) and malic enzyme involved in lipogenesis were studied in mature bonnet monkeys, macaca radiata. immunization of monkey with anti-fsh for 24 days did not produce any significant changes in the body ...