Results 211 to 220 of about 199,281 (229)

Binding of glucagon to lipid bilayers

Biochemistry and Cell Biology, 1990
At physiological pH and temperature, glucagon binds to liposomes composed of egg phosphatidylcholine and cholesterol (2:1 mol/mol) in a highly specific manner. The chemical reactivities of the functional groups were determined over the concentration range of 1.0 × 10−6 – 3.0 × 10−8 M by the method of competitive labelling with 1-fluoro-2,4 ...
Harvey Kaplan, Raymond P. Oomen
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Interaction of antihistamines with lipid bilayers

Biochemical Pharmacology, 1979
Abstract Interaction between a variety of antihistamines and lipid bilayers has been studied. The H 1 -antagonists all reduce the phase transition temperature of dipalmitoyl phosphatidylcholine, and these data have been used to calculate binding constants for the drug to lipid. The H 2 -antagonists cimetidine and metiamide have no effect on the lipid
M.G. Gore, E.K. Rooney, Anthony G. Lee
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Photoelectrospectrometry of bilayer lipid membranes

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1980
These different bilayer lipid membrane systems were studied under visible and ultraviolet illumination. The first system consisted of a bilayer lipid membrane formed with a mixture of phospholipids and cholesterol, to one side of which purple membrane fragments from Halobacterium halobium were added.
Jose R. Lopez, H. Ti Tien
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Electrofusion of Lipid Bilayers

1989
Electrostimulated fusion (electrofusion) is one of the promising methods in the study of the somatic hybridization of cells. In spite of a great number of studies in which this phenomenon is used, its mechanism has not been elucidated. Electrofusion, and generally fusion, presupposes the joining of cell membranes and the volumes limited by them ...
Grigory B. Melikyan, L.V. Chernomordik
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The formation of lipid bilayers on surfaces

Colloids and Surfaces B: Biointerfaces, 2009
The adsorption of biological molecules at solid-liquid interfaces is growing in importance due to its application to a very broad range of fields. Biomimetic systems like phospholipid mono- or bilayers are used to study such adsorption processes in great detail.
Gerald Brezesinski, Rumen Krastev, Sandra Gromelski, Ana M. Saraiva   +3 more
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Bilayer Lipid Membranes

Berichte der Bunsengesellschaft für physikalische Chemie, 1978
AbstractThin lipid membranes formed across an aperture in a teflon foil are frequently used as model systems to simulate the hydrophobic diffusion barrier of biological membranes. These membranes have a thickness of about twice the length of a lipid molecule (bilayer membranes) and are prepared either by a spontaneous transition of a thick lamella made
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Spherical lipid bilayer membranes

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1967
Abstract 1. 1. The formation of a new model membrane system is described. In its final configuration this system consists of four phases: a spherical bilayer membrane several mm in diameter, a bulk lipid phase which takes the form of a cap or lens covering less than 10% of the spherical surface, and two aqueous phases, one on each side of the ...
R. Pagano, Thomas E. Thompson
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Structure of Oriented Lipid Bilayers

Nature New Biology, 1971
X-ray diffraction studies show that lipid hydrocarbon chains are uniformly packed in bilayers and oriented so that their free ends are near the centre. This provides a model for biological membranes.
M. H. F. Wilkins, Y. K. Levine
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Proton permeation of lipid bilayers

Journal of Bioenergetics and Biomembranes, 1987
Proton permeation of the lipid bilayer barrier has two unique features. First, permeability coefficients measured at neutral pH ranges are six to seven orders of magnitude greater than expected from knowledge of other monovalent cations. Second, proton conductance across planar lipid bilayers varies at most by a factor of 10 when pH is varied from near
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The permeability of a lipid bilayer

2006
This work presents results on the permeability of a lipid bilayer to water molecules. We look at the change in bilayer permeability as a function of lipid structure and area per lipid molecule. A molecular dynamic simulation (MDS) of a solvent surfactant system was used in the canonical ensemble to simulate the membranes.
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