Chain Arrangements in the Gel State and the Transition Temperatures of Phosphatidylcholines

Measures of chain length, inequivalence of chain length, and chain position have been incorporated into a parameter, D, which we call the “relative chain inequivalence.” D has been calculated for a number of saturated phosphatidylcholines (PC) containing one type of chain (homoacid PC), saturated PC...

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Bibliographic Details
Published inBiophysical journal Vol. 48; no. 6; pp. 915 - 918
Main Authors Davis, P.J., Keough, K.M. W.
Format Journal Article
LanguageEnglish
Published Bethesda, MD Elsevier Inc 01.12.1985
Biophysical Society
Subjects
Biological and medical sciences
Disperse state. Micelles
Fundamental and applied biological sciences. Psychology
lipid bilayers
Molecular biophysics
phase transition
phosphatidylcholine
Physico-chemical properties of biomolecules
Colloidal gel
Order parameter
Chain length
Phosphatidylcholine
Chemical composition
Phase transitions
Mesomorphic state
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Summary:Measures of chain length, inequivalence of chain length, and chain position have been incorporated into a parameter, D, which we call the “relative chain inequivalence.” D has been calculated for a number of saturated phosphatidylcholines (PC) containing one type of chain (homoacid PC), saturated PC containing two different acyl chains (heteroacid PC), and heteroacid PC containing one saturated and one unsaturated chain. The gel to liquid-crystalline transition temperatures and D are related in a regular pattern, which suggests similarity of chain packing in the gel. This pattern may have useful predictive value.
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ISSN:0006-3495
1542-0086
DOI:10.1016/S0006-3495(85)83854-6