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PMID: 279918 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Temperature dependence of calcium-induced fusion of sonicated phosphatidylserine vesicles.

Sun ST, Day EP, Ho JT

Abstract

We have measured the temperature dependence calcium-induced fusion of sonicated phosphatidylserine vesicles. The vesicles were incubated in the presence of calcium at a specified temperature until the resulting aggregation or fusion process had gone to completion. EDTA was then added and the resulting final size of the vesicle population was measured by using dynamic light scattering. This final size was plotted against incubation temperature to show the temperature dependence of calcium-induced fusion. This curve has a peak near 11 degrees C which may be associated with the phase transition of the sonicated phosphatidylserine vesicles in the presence of calcium prior to the aggregation or fusion process.

MeSH Terms
Animals Calcium Cattle Cell Fusion Kinetics Lasers Liposomes Membranes/physiology Models, Biological Molecular Weight Phosphatidylserines Scattering, Radiation Sonication Temperature
Chemicals
Liposomes Phosphatidylserines Calcium
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Sun S T
Day E P
Ho J T
References (21)
21 references, click to expand
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1978-09-00
Pages
4325-8
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC336107
Subset
IM
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