ON THE STABILITY OF THE RIPPLE PHASE IN THE DPPC PLPC/WATER TERNARY-SYSTEM/

Authors
CHECCHETTI A CHIDICHIMO G GOLEMME A GRASSO D IMBARDELLI D LAROSA C NICOLETTA FP WESTERMAN PW
Citation
A. Checchetti et al., ON THE STABILITY OF THE RIPPLE PHASE IN THE DPPC PLPC/WATER TERNARY-SYSTEM/, Chemistry and physics of lipids, 90(1-2), 1997, pp. 109-115
Citations number
45
Categorie Soggetti
Biology,Biophysics
Journal title
Chemistry and physics of lipids → ACNP
ISSN journal
00093084
Volume
90
Issue
1-2
Year of publication
1997
Pages
109 - 115
Database
ISI
SICI code
0009-3084(1997)90:1-2<109:OTSOTR>2.0.ZU;2-T
Abstract
The effect of incorporation of 1-palmitoyl-sn-glycero-3-phosphocholine (PLPC) on the structure of the P-beta' ripple mesophase in aqueous di spersions of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) has be en studied by differential scanning calorimetry (DSC) and scanning dil atometry (SD). For samples containing 34 wt. % (H2O)-H-2 and 0-15 wt. % PLPC, a pretransition was observed by DSC. The pretransition disappe ars at 15 wt. % PLPC. The behavior of thermodynamic functions at the p retransition and main transition gives new insights on the structural changes produced by PLPC on bilayers of DPPC. (C) 1997 Elsevier Scienc e Ireland Ltd.