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Understanding the lateral organization of biological membranes plays a key role on the road to fully appreciate the physiological functions of this fundamental barrier between the inside and outside regions of a cell. Ternary lipid bilayers composed of a high and a low melting temperature lipid and cholesterol represent a model system that mimics some of the important thermodynamical features of much more complex lipid mixtures such as those found in mammal membranes. The phase diagram of these ternary mixtures can be studied exploiting fluorescence microscopy in giant unilamellar vesicles, and it is typically expected to give rise, for specific combinations of composition and temperature, to regions of two-phase coexistence and a region with three-phase coexistence, namely, the liquid-ordered, liquid-disordered, and solid phases. Whereas the observation of two-phase coexistence is routinely possible …
Cell Press
Publication date: 
5 Feb 2019

Daniel Balleza, Andrea Mescola, Nathaly Marín–Medina, Gregorio Ragazzini, Marco Pieruccini, Paolo Facci, Andrea Alessandrini

Biblio References: 
Volume: 116 Issue: 3 Pages: 503-517
Biophysical journal