help button home button Biophys. J.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS

Biophysical Journal 71: 3186-3198 (1996)
© 1996 the Biophysical Society

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Related articles in Biophys. J.
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Snyder, R G
Right arrow Articles by Mendelsohn, R
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Snyder, R G
Right arrow Articles by Mendelsohn, R

IR spectroscopic study of the structure and phase behavior of long-chain diacylphosphatidylcholines in the gel state.

R G Snyder, G L Liang, H L Strauss and R Mendelsohn

Department of Chemistry, University of California, Berkeley 94720-1460, USA. rgs@uclink2.berkeley.edu

ABSTRACT

Fully hydrated dispersions of simple linear saturated diacylphosphatidylcholines with even-numbered acyl chains of lengths from 18 to 24 carbons can exist in a low-temperature, highly ordered, orthorhombic phase (G(o)) that differs from the L beta phase (Gd) normally found for shorter chains. The temperature behavior of these dispersions has been studied by infrared spectroscopy. Chain packing in the G(o) phase was found to be nearly identical to that of the orthorhombic phase of crystalline n-alkanes. With increasing temperature, the G(o) phase undergoes a transition to Gd at approximately 45 degrees C below Tm. This transition occurs at a higher temperature and becomes sharper with increasing chain length. Chain packing in the Gd phase was found to be disordered in a way that can be expressed in terms of a distribution of subcell setting angles. The Gd phase converts to a phase (Gh) with hexagonal-like chain packing at temperatures below Tm. The results support and extend those of a recent x-ray diffraction study of the 24-carbon diacyclphosphatidylcholine gel.


Related articles in Biophys. J.:

A new phase in phosphatidylcholines.
T J O'Leary and J T Mason
Biophys. J. 1996 71: 2915-2916. [PDF]  



This article has been cited by other articles:


Home page
 Biophys. JHome page
Z. D. Schultz and I. W. Levin
Lipid Microdomain Formation: Characterization by Infrared Spectroscopy and Ultrasonic Velocimetry
Biophys. J., April 15, 2008; 94(8): 3104 - 3114.
[Abstract] [Full Text] [PDF]

Home page
 Biophys. JHome page
G. Pabst, S. Danner, S. Karmakar, G. Deutsch, and V. A. Raghunathan
On the Propensity of Phosphatidylglycerols to Form Interdigitated Phases
Biophys. J., July 15, 2007; 93(2): 513 - 525.
[Abstract] [Full Text] [PDF]

Home page
 Biophys. JHome page
G. S. Gooris and J. A. Bouwstra
Infrared Spectroscopic Study of Stratum Corneum Model Membranes Prepared from Human Ceramides, Cholesterol, and Fatty Acids
Biophys. J., April 15, 2007; 92(8): 2785 - 2795.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1996 by the Biophysical Society.