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Leakage from egg phosphatidylcholine vesicles induced by Ca2+ and alcohols |
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| Affiliation: | 1. Institute for Sustainable Energy & College of Sciences, Shanghai University, Shanghai 200444, China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China;1. Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China;2. Department of Chemistry, University of Colorado Boulder, Boulder, CO 80309, United States |
| Abstract: | The results shown in this paper indicate that the permeability properties of egg yolk phosphatidylcholine sonicated vesicles as detected by the leakage of carboxy fluorescein changes according to the Ca2+ content. Vesicles containing Ca2+ show a higher rate of leakage than those containing Na+ solutions in response to the increase of Ca2+ concentration in the outer solution. The results are interpreted in terms of the rigidity promoted by Ca2+ and are compared to those obtained with long and short chain alcohols. |
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