Self-association processes involving anthracene labeled phosphatidylcholines in model membrane.

Self-association processes involving anthracene labeled phosphatidylcholines in model membrane. Research Abstract Details 

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Self-association processes involving anthracene labeled phosphatidylcholines in model membrane. Abstract Text:

F Rodriguez,J F Tocanne,A Lopez,

When studying lipid-lipid or lipid-protein interaction in membranes, the correct interpretation of data obtained when using fluorescent phospholipid probes requires the best possible knowledge of probe behaviour in phosopholipid membranes. Analysis of the translational dynamics and photochemical properties of the anthracene-labeled phosphatidylcholine (EAPC) shows that a self-association process occurs with this probe in the membrane at the ground state. This anthracene self-association is characterized and leads to a hypochromic effect which has been studied by means of ultraviolet absorption spectroscopy in unilamellar egg-yolk phosphatidylcholine (EggPC) vesicles. A model with indefinite linear self-association, in which each step has the same equilibrium constant, best describes the data. The equilibrium constant was found to be in the 300-500 M(-1) range and the complex lateral distribution pattern of EAPC in model membranes, which results from this self-association process, is characterized and seems to be mainly controlled by the amount of EAPC incorporated into the lipid bilayer.

Self-association processes involving anthracene labeled phosphatidylcholines in model membrane. Publishing Authors By Initials

F Rodriguez,JF Tocanne,A Lopez,

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Self-association processes involving anthracene labeled phosphatidylcholines in model membrane. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Biophysical chemistry

VOLUME: 53

Page Numbers: 169-80

Journal Abbreviation: Biophys. Chem.

ISSN: 0301-4622

DAY: 5

MONTH: Feb

YEAR: 1995

Self-association processes involving anthracene labeled phosphatidylcholines in model membrane. Information

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LANGUAGE: eng

NlmUniqueID: 403171

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Grant and Affiliation Information for Self-association processes involving anthracene labeled phosphatidylcholines in model membrane.

AFFILIATION: Institut de Biologie Cellulaire et de Génétique du CNRS, 118 Route de Narbonne, 31062 Toulouse Cedex, France.

Country: Netherlands

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MEDLINETA: Biophys Chem

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