Cooperative lengths and elastic constants in lipid bilayers: The chlorophyll a /dimyristoyllecithin system
In order to study the slow, cooperative motional modes induced by the addition of chlorophyll a (chl a) to dimyristoyllecithin (DML) bilayers, the T1, T1ρ, and T2 deuterium relaxation rates in 1,2-dimyristoyl(9,9′,10,10′-d4) phosphatidyl choline have been measured as a function of increasing chl a c...
Published in: | The Journal of Chemical Physics |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AIP Publishing
1987
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Subjects: | |
Online Access: | http://dx.doi.org/10.1063/1.452508 https://pubs.aip.org/aip/jcp/article-pdf/86/10/5789/11179779/5789_1_online.pdf |
Summary: | In order to study the slow, cooperative motional modes induced by the addition of chlorophyll a (chl a) to dimyristoyllecithin (DML) bilayers, the T1, T1ρ, and T2 deuterium relaxation rates in 1,2-dimyristoyl(9,9′,10,10′-d4) phosphatidyl choline have been measured as a function of increasing chl a content. These data have been interpreted in terms of a model of fluctuating order directors. A fit of the T1ρ and T2 relaxation rates using this model reveal a trend of decreasing elastic constants and cooperative lengths as chl a is added. |
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