Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 85: Issue 3
Hydration properties of symmetric chain and asymmetric chain sphingomyelin bilayers
Authors:
Y. Kawasaki Okayama University of Science Department of Biochemistry, Faculty of Science Okayama Japan 700-0005 1-1 Ridai-cho

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A. Kuboki Okayama University of Science Department of Biochemistry, Faculty of Science Okayama Japan 700-0005 1-1 Ridai-cho

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S. Ohira Okayama University of Science Department of Biochemistry, Faculty of Science Okayama Japan 700-0005 1-1 Ridai-cho

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M. Kodama Okayama University of Science Department of Biochemistry, Faculty of Science Okayama Japan 700-0005 1-1 Ridai-cho

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Pages:
609–616
Online Publication Date:
15 Sep 2006
Publication Date:
01 Sep 2006
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7659-2
Keywords:
deconvolution analysis; ice-melting DSC curves; interlamellar water; large size multilamellar vesicle; small size vesicle; symmetric chain and asymmetric chain sphingomyelins
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Abstract  

Hydration properties of lipid bilayer systems are compared for symmetric chain sphingomyelin (N-palmitoylsphingomyelin) and asymmetric chain sphingomyelin (N-lignoceroylsphingomyelin). These sphingomyelins were semisynthesized by a deacylation- reacylation process with a natural sphingomyelin used as a starting material. The number of differently bound water molecules was estimated by a deconvolution analysis of the ice-melting curves obtained by a differential scanning calorimetry (DSC) and was used to construct a water distribution diagram for these water molecules. Similarly to a natural sphingomyelin used for comparison, the asymmetric chain sphingomyelin was found to form small size vesicles having an internal cavity and incorporate 15 water molecules per molecule of lipid into its cavity, in contrast with 5 H2O/lipid for freezable interlamellar water observed for large size multilamellar vesicles formed by the symmetric chain sphingomyelin.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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