Results 341 to 350 of about 31,592 (359)
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The interaction of ions with phosphatidylcholine bilayers
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1977Abstract The interaction of lanthanides and other cations with phosphatidylcholine bilayers present as single bilayer vesicles in 2H2O has been investigated in terms of stoichiometry, apparent binding constants and environmental conditions. Lanthanides are shown to form 2 : 1 (molar ratio) phosphatidylcholine to metal ion complexes.
R. J. P. Williams +5 more
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Importance of phosphatidylcholine on the chloroplast surface
Progress in Lipid Research, 2017In plant cells, phosphatidylcholine (PC) is a major glycerolipid of most membranes but practically lacking from the plastid internal membranes. In chloroplasts, PC is absent from the thylakoids and the inner envelope membrane. It is however the main component of the outer envelope membrane, where it exclusively distributes in the outer monolayer.
Botella, César +2 more
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Biochimica et Biophysica Acta (BBA) - Biomembranes, 1980
Freeze-fracture electron microscopy is used to study the rippled texture in pure dimyristoyl and dipalmitoyl phosphatidylcholine membranes and in mixtures of dimyristoyl phosphatidylcholine and cholesterol. Evidence is presented that the apparent phase transition properties of multilamellar liposomes may be dependent on the manner in which liposomes ...
Bruce R. Copeland, Harden M. McConnel
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Freeze-fracture electron microscopy is used to study the rippled texture in pure dimyristoyl and dipalmitoyl phosphatidylcholine membranes and in mixtures of dimyristoyl phosphatidylcholine and cholesterol. Evidence is presented that the apparent phase transition properties of multilamellar liposomes may be dependent on the manner in which liposomes ...
Bruce R. Copeland, Harden M. McConnel
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Chemistry and Physics of Lipids, 1976
The solubility of phosphatidylcholine (PC) was studied by the spectroscopic analysis and the measurement of the solubility. The qualitative analysis of infrared absorption spectra confirmed the existence of two types of hydrogen bondings between chloroform and PC, one between chloroform and the C=O group of PC and the other between chloroform and the ...
Tsunetake Fujiyama +2 more
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The solubility of phosphatidylcholine (PC) was studied by the spectroscopic analysis and the measurement of the solubility. The qualitative analysis of infrared absorption spectra confirmed the existence of two types of hydrogen bondings between chloroform and PC, one between chloroform and the C=O group of PC and the other between chloroform and the ...
Tsunetake Fujiyama +2 more
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Journal of the Physical Society of Japan, 1979
Phase diagram has been determined with X-rays for bilayer membranes of mixed lipids of dioleoyl-phosphatidylcholine/dipalmitoyl-phosphatidylcholine in water. Observed liquidus lines were reproduced well by calculation on the assumption of ideal mixing of the two lipids.
Kishio Furuya, Toshio Mitsui
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Phase diagram has been determined with X-rays for bilayer membranes of mixed lipids of dioleoyl-phosphatidylcholine/dipalmitoyl-phosphatidylcholine in water. Observed liquidus lines were reproduced well by calculation on the assumption of ideal mixing of the two lipids.
Kishio Furuya, Toshio Mitsui
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Proceedings, annual meeting, Electron Microscopy Society of America, 1991
There is great interest in the process of lipid self-assembly, especially the microstructure formed from lipid mixtures. Spontaneous unilamellar vesicles have been reported by Roberts from mixtures of long-chain lecithins and short-chain lecithins. Alone, dipalmitoyi phophatidylcholine (DPPC) forms normal multilamellar phases, a solid Lβ phase up to ...
E. Naranjo, J.A.N. Zasadzinski
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There is great interest in the process of lipid self-assembly, especially the microstructure formed from lipid mixtures. Spontaneous unilamellar vesicles have been reported by Roberts from mixtures of long-chain lecithins and short-chain lecithins. Alone, dipalmitoyi phophatidylcholine (DPPC) forms normal multilamellar phases, a solid Lβ phase up to ...
E. Naranjo, J.A.N. Zasadzinski
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Lack of efficacy of phosphatidylcholine in ataxias
Neurology, 1988We gave phosphatidylcholine orally at a daily dosage of 9 grams for 4 years to 20 subjects with Friedreich's ataxia (FA) and 24 with olivopontocerebellar atrophy (OPCA). There was no clinical improvement during the follow-up compared with 12 ataxic patients (six FA and six OPCA) who did not receive any treatment.
SORBI, SANDRO +5 more
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Biochimica et Biophysica Acta (BBA) - Biomembranes, 1990
In order to study the individual steps involved in the import of phosphatidylcholine (PC) into rat liver mitochondria, a number of PC analogues were introduced into the outer membrane of isolated mitochondria. Two fluorescent PC species, i.e. 1-palmitoyl-2-(16-bimanylthio)hexadecanoyl-PC (bimane-PC) and 1-palmitoyl-2-(10-pyrene)decanoyl-PC (pyrene-PC),
Nicolay, K. +4 more
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In order to study the individual steps involved in the import of phosphatidylcholine (PC) into rat liver mitochondria, a number of PC analogues were introduced into the outer membrane of isolated mitochondria. Two fluorescent PC species, i.e. 1-palmitoyl-2-(16-bimanylthio)hexadecanoyl-PC (bimane-PC) and 1-palmitoyl-2-(10-pyrene)decanoyl-PC (pyrene-PC),
Nicolay, K. +4 more
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Interaction of fluoxetine with phosphatidylcholine liposomes
Biophysical Chemistry, 2005Fluoxetine (Prozac) is one of the latest of a new generation of antidepressants, approved by FDA in 2002. The interactions of fluoxetine with multilamellar liposomes of pure phosphatidylcholine (PC) or containing cholesterol 10% molar were studied as a function of the lipid chain lengths, using differential scanning calorimetry and spin labelling EPR ...
MOMO, Federico +2 more
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Phosphatidylcholine cycle and regulation of phosphatidylcholine biosynthesis by enzyme translocation
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1994Hélène Tronchère +3 more
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