Thermal Fluctuations of Oriented Lipid Membranes by Nonspecular Neutron Reflectometry†

Langmuir ◽  
2003 ◽  
Vol 19 (19) ◽  
pp. 7703-7711 ◽  
Author(s):  
T. Salditt ◽  
C. Münster ◽  
U. Mennicke ◽  
C. Ollinger ◽  
G. Fragneto
Keyword(s):  
Lipid Membranes ◽  
Thermal Fluctuations ◽  
Neutron Reflectometry

scholarly journals Neutron Reflectometry Study of the Conformation of HIV Nef Bound to Lipid Membranes

2010 ◽  
Vol 99 (6) ◽  
pp. 1940-1948 ◽  
Author(s):  
Michael S. Kent ◽  
Jaclyn K. Murton ◽  
Darryl Y. Sasaki ◽  
Sushil Satija ◽  
Bulent Akgun ◽  
...  
Keyword(s):  
Lipid Membranes ◽  
Neutron Reflectometry

scholarly journals Lipid membranes on a surface grating studied by neutron reflectometry

2005 ◽  
Vol 71 (2) ◽  
pp. 311-317 ◽  
Author(s):  
C Ollinger ◽  
D Constantin ◽  
J Seeger ◽  
T Salditt
Keyword(s):  
Lipid Membranes ◽  
Neutron Reflectometry ◽  
Surface Grating

Bending elasticity and thermal fluctuations of lipid membranes. Theoretical and experimental requirements

1989 ◽  
Vol 50 (17) ◽  
pp. 2389-2414 ◽  
Author(s):  
J.F. Faucon ◽  
M. D. Mitov ◽  
P. Méléard ◽  
I. Bivas ◽  
P. Bothorel
Keyword(s):  
Lipid Membranes ◽  
Thermal Fluctuations ◽  
Bending Elasticity

Role of molecular tilt in thermal fluctuations of lipid membranes

2007 ◽  
Vol 76 (2) ◽  
Author(s):  
Eric R. May ◽  
Atul Narang ◽  
Dmitry I. Kopelevich
Keyword(s):  
Lipid Membranes ◽  
Thermal Fluctuations

Mechanics of Irradiation-Induced Structural Changes in a Lipid Vesicle

2019 ◽  
Vol 86 (4) ◽  
Author(s):  
Xinyu Liao ◽  
Prashant K. Purohit
Keyword(s):  
Lipid Membranes ◽  
Structural Changes ◽  
Thermal Fluctuations ◽  
Lipid Vesicle ◽  
Medical Treatments ◽  
Hydrocarbon Chains ◽  
Equilibrium And Kinetics ◽  
Kinetics Of ◽  
Simultaneous Influence ◽  
Shape Changes

Irradiation-induced oxidation of lipid membranes is implicated in diseases and has been harnessed in medical treatments. Irradiation induces the formation of oxidative free radicals, which attack double bonds in the hydrocarbon chains of lipids. Studies of the kinetics of this reaction suggest that the result of the first stage of oxidation is a structural change in the lipid that causes an increase in the area per molecule in a vesicle. Since area changes are directly connected to membrane tension, irradiation-induced oxidation affects the mechanical behavior of a vesicle. Here, we analyze shape changes of axisymmetric vesicles that are under simultaneous influence of adhesion, micropipette aspiration, and irradiation. We study both the equilibrium and kinetics of shape changes and compare our results with experiments. The tension–area relation of a membrane, which is derived by accounting for thermal fluctuations, and the time variation of the mechanical properties due to oxidation play important roles in our analysis. Our model is an example of the coupling of mechanics and chemistry, which is ubiquitous in biology.

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