| Modulation of the domain topography of biphasic monolayers of stearic acid and dimyristoyl phosphatidylcholine. | |
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MedLine Citation:
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PMID: 22274694 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The phase diagram of mixed monolayers composed of dimyristoyl phosphatidylcholine (DMPC) and stearic acid (SA) on different subphases was previously reported. It was observed that on acid subphases, liquid-condensed domains with shapes that depend on the SA proportion are formed. For mixtures with 40-45mole% of SA, the domain shape changes from flower-like to circular domains. In this work, we carried out a detailed study of the driving force for the shape change. We find that it is related to the domain density which, in turn, is driven by the domain nucleation process and thus by oversaturation of the system leading to phase segregation. This could be a way of self-regulating the local electrostatics and mechanical properties in membrane surfaces with segregated phase domains. |
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Authors:
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Franco Vega Mercado; Bruno Maggio; Natalia Wilke |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-16 |
Journal Detail:
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Title: Chemistry and physics of lipids Volume: - ISSN: 1873-2941 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0067206 Medline TA: Chem Phys Lipids Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012. Published by Elsevier Ireland Ltd. |
Affiliation:
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Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, UNC-CONICET), Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina. |
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