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Tension‐voltage relationship in membrane fusion and its implication in exocytosis
Author(s) -
Ramos Corinne,
Teissié Justin
Publication year - 2000
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(99)01739-1
Subject(s) - exocytosis , membrane , electrofusion , lipid bilayer fusion , fusion , biophysics , tension (geology) , membrane potential , chemistry , materials science , biology , biochemistry , composite material , linguistics , philosophy , ultimate tensile strength
In this study, new methods are used to control cellular membrane tension to evaluate the role it plays in electrofusion. The data show that membrane tension present during the application of an electric field facilitates electro‐induced membrane fusion. No enhancement was detected if the strain was applied after the pulse. Analysis of the electromechanical process of fusion revealed a synergy between the two kinds of constraints in the membrane fusion. Both mechanical and electrical constraints apparently play a key role in membrane fusion between the granule membrane and the plasma membrane, i.e. the exocytosis process.