| WATER STATE AND CARBONYL DISTRIBUTION POPULATIONS IN CONFINED REGIONS OF LIPID BILAYERS OBSERVED BY FTIR SPECTROSCOPY. | |
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MedLine Citation:
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PMID: 23293989 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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It has been suggested that water in confined regions presents different properties than bulk water, mainly due to the changes in water population species that may be induced by the adjacent walls of different polarities, in terms of hydrogen bonding formation. In this context, it would be expected that lipids in the gel and the fluid state should offer different templates for water organization. The presence of water pockets or defects in lipid bilayers has been proposed to explain the insertion of charged and polar peptides and aminoacids in membranes. In this work we provide direct evidence by means of FTIR spectroscopy that water band profiles are changed whether lipids are either in the solid state, in the gel state after heating and cooling across the phase transition or in the fluid state. The different bands found in each case were assigned to different H bonded water populations in correspondence to the exposure of carbonyl groups. |
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Authors:
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E Anibal Disalvo; Maria Angeles Frias |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-8 |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: - ISSN: 1520-5827 ISO Abbreviation: Langmuir Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-1-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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