scholarly journals Anomalous swelling of multilamellar lipid bilayers in the transition region by renormalization of curvature elasticity

1994 ◽  
Vol 72 (24) ◽  
pp. 3911-3914 ◽  
Author(s):  
Thomas Hønger ◽  
Kell Mortensen ◽  
John Hjort Ipsen ◽  
Jesper Lemmich ◽  
Rogert Bauer ◽  
...  
Keyword(s):  
Transition Region ◽  
Lipid Bilayers ◽  
Curvature Elasticity

Curvature elasticity of multilamellar lipid bilayers close to the chain-melting transition

2001 ◽  
Vol 110 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Kiyoshi Mishima ◽  
Shuichi Nakamae ◽  
Hiroyuki Ohshima ◽  
Tamotsu Kondo
Keyword(s):  
Lipid Bilayers ◽  
Melting Transition ◽  
Curvature Elasticity

HELFRICH THEORY OF BIOMEMBRANES

1992 ◽  
Vol 06 (15) ◽  
pp. 917-933 ◽  
Author(s):  
YU-ZHANG XIE ◽  
ZHONG-CAN OU-YANG
Keyword(s):  
Elasticity Theory ◽  
Lipid Bilayers ◽  
Fluid Membranes ◽  
Curvature Elasticity

In this paper we give a brief review on some of the recent results obtained from the curvature elasticity theory of biomembranes originally developed by Helfrich on fluid membranes and recently extended to tilted chiral lipid bilayers.

Planar Lipid Bilayers as Light Guides

1979 ◽  
Vol 34 (12) ◽  
pp. 1436-1445 ◽  
Author(s):  
H. P. Braun ◽  
R. Herrmann ◽  
M. E. Michel-Beyerle
Keyword(s):  
Transition Region ◽  
Lipid Bilayers ◽  
Electric Fields ◽  
Light Guide ◽  
Planar Lipid Bilayers ◽  
Light Path ◽  
Scattering Centers ◽  
Light Guides

Abstract The light guide properties of planar lipid bilayers are discussed and experimentally verified. The interaction between the light and the constituents of the bilayer is substantially increased since the light path is as large as the diameter of the film, e.g. of the order of several millimeters. The influence of electric fields on the bilayer and on the bilayer-torus transition region has been investigated. Field induced generation of scattering centers is detected in solvent containing bilayers.

Effects of Ambipolar Diffusion on Prominence Thread Models

1994 ◽  
Vol 144 ◽  
pp. 315-321 ◽  
Author(s):  
M. G. Rovira ◽  
J. M. Fontenla ◽  
J.-C. Vial ◽  
P. Gouttebroze
Keyword(s):  
Energy Balance ◽  
Transition Region ◽  
Ambipolar Diffusion ◽  
Line Profiles ◽  
Balance Equations ◽  
Model Calculations ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Theoretical Structure

AbstractWe have improved previous model calculations of the prominence-corona transition region including the effect of the ambipolar diffusion in the statistical equilibrium and energy balance equations. We show its influence on the different parameters that characterize the resulting prominence theoretical structure. We take into account the effect of the partial frequency redistribution (PRD) in the line profiles and total intensities calculations.

Observation of Concanavalin-A receptors on hydrated planar erythrocyte membrane film by in situ electron microscopy

1983 ◽  
Vol 41 ◽  
pp. 608-609
Author(s):  
Neng-Bo He ◽  
S.W. Hui
Keyword(s):  
Lipid Bilayers ◽  
Erythrocyte Membrane ◽  
Lipid Membranes ◽  
Surface Film ◽  
Biological Membranes ◽  
Electron Microscopic Observation ◽  
Electron Microscopic ◽  
Black Lipid Membranes ◽  
Fine Mesh ◽  
Planar Films

Monolayers and planar "black" lipid membranes have been widely used as models for studying the structure and properties of biological membranes. Because of the lack of a suitable method to prepare these membranes for electron microscopic observation, their ultrastructure is so far not well understood. A method of forming molecular bilayers over the holes of fine mesh grids was developed by Hui et al. to study hydrated and unsupported lipid bilayers by electron diffraction, and to image phase separated domains by diffraction contrast. We now adapted the method of Pattus et al. of spreading biological membranes vesicles on the air-water interfaces to reconstitute biological membranes into unsupported planar films for electron microscopic study. hemoglobin-free human erythrocyte membrane stroma was prepared by hemolysis. The membranes were spreaded at 20°C on balanced salt solution in a Langmuir trough until a surface pressure of 20 dyne/cm was reached. The surface film was repeatedly washed by passing to adjacent troughs over shallow partitions (fig. 1).

Effect of Integral Proteins on Frozen Membrane Fracture

1980 ◽  
Vol 38 ◽  
pp. 756-759 ◽  
Author(s):  
S. Kirchanski ◽  
D. Branton
Keyword(s):  
Lipid Bilayers ◽  
Freeze Fracture ◽  
Covalent Bond ◽  
Erythrocyte Membranes ◽  
Glycophorin A ◽  
Experimental Protocol ◽  
Transmembrane Glycoprotein ◽  
Bond Breakage ◽  
Human Erythrocyte Membranes ◽  
Integral Proteins

We have investigated the effect of integral membrane proteins upon the fracturing of frozen lipid bilayers. This investigation has been part of an effort to develop freeze fracture labeling techniques and to assess the possible breakage of covalent protein bonds during the freeze fracture process. We have developed an experimental protocol utilizing lectin affinity columns which should detect small amounts of covalent bond breakage during the fracture of liposomes containing purified (1) glycophorin (a transmembrane glycoprotein of human erythrocyte membranes). To fracture liposomes in bulk, frozen liposomes are ground repeatedly under liquid nitrogen. Failure to detect any significant covalent bond breakage (contrary to (2)) led us to question the effectiveness of our grinding procedure in fracturing and splitting lipid bilayers.

Late Stages of the “Pearling" Instability in Lipid Bilayers

1997 ◽  
Vol 7 (9) ◽  
pp. 1185-1204 ◽  
Author(s):  
J. L. Coveas ◽  
S. T. Milner ◽  
W. B. Russel
Keyword(s):  
Lipid Bilayers ◽  
Late Stages
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