| Effect of lipid admixtures on the L-dipalmitoylphosphatidylcholine subtransition. | |
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MedLine Citation:
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PMID: 3753903 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of lipid admixtures on the properties of the L-dipalmitoylphosphatidylcholine (L-DPPC) subtransition is investigated by using high-sensitivity differential scanning calorimetry. The four admixtures used are D-DPPC, L-dipalmitoylphosphatidylethanolamine (L-DPPE), cholesterol, and palmitic acid. In all cases the subtransition decreases in enthalpy until disappearance with increase of the admixture concentrations. About 5-7 mol% of D-DPPC or palmitic acid are sufficient for abolishment (without position shifts) of the subtransition, while, on addition of L-DPPE or cholesterol, it persists up to about 20 mol% of the admixture and its disappearance is accompanied by a slight shift to higher temperatures. These data are tentatively interpreted in terms of lateral mixing of L-DPPC and admixture as indicating compound formation with D-DPPC and palmitic acid, and clustering of L-DPPE and cholesterol. |
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Authors:
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A I Boyanov; R D Koynova; B G Tenchov |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chemistry and physics of lipids Volume: 39 ISSN: 0009-3084 ISO Abbreviation: Chem. Phys. Lipids Publication Date: 1986 Jan |
Date Detail:
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Created Date: 1986-04-04 Completed Date: 1986-04-04 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 0067206 Medline TA: Chem Phys Lipids Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 155-63 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Calorimetry, Differential Scanning Cholesterol Liposomes* Models, Biological Palmitic Acid Palmitic Acids Phosphatidylethanolamines Pulmonary Surfactants* |
| Chemical | |
Reg. No./Substance:
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0/Liposomes; 0/Palmitic Acids; 0/Phosphatidylethanolamines; 0/Pulmonary Surfactants; 3026-45-7/1,2-dipalmitoyl-3-phosphatidylethanolamine; 57-10-3/Palmitic Acid; 57-88-5/Cholesterol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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