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Proceedings Paper

Quantitative determination of conformational order in biomembranes: from aqueous monolayers to living cells
Author(s): Richard Mendelsohn
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Paper Abstract

Two regions of the IR spectrum of phospholipid molecules have been utilized to monitor acyl chain conformational order in model biomembranes of increasing complexity from one component systems to living cells. The rocking modes of CD2 groups synthetically incorporated into the acyl chains provide a measure of % gauche roamer formation as a function of chain position from the interfacial region to the bilayer center. In addition, the CH2 wagging vibrations in disordered phases provide a means of identifying the particular two- and three-bond conformational states that dominate the disordering process, while the band progressions that result from the wagging of coupled CH2 oscillators in ordered states monitor the fraction of all-trans conformations.

Paper Details

Date Published: 31 January 1994
PDF: 6 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166778
Show Author Affiliations
Richard Mendelsohn, Rutgers Univ. (United States)

Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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