“…In this context, it is therefore important to study the behavior of the different phases formed by the various biotinylated phospholipids in aqueous dispersion. In order to characterize the polymorphic phase behavior of these lipids, studies have been made previously on a homologous series of diacyl-Abiotinylphosphatidylethanolamines (biotin-PEs)1 with chain lengths from C( 12:0) to C(20:0) by using differential scanning calorimetry, 31P-NMR spectroscopy and low-angle X-ray diffraction (Swamy et al, 1993(Swamy et al, ,1994. It was found that, in 1 Abbreviations: ESR, electron spin resonance; NMR, nuclear magnetic resonance; DSC, differential scanning calorimetry; PC, phosphatidylcholine; PE, phosphatidylethanolamine; biotin-PE, IV-biotinylphosphatidylethanolamine; DLBPE, DMBPE, DPBPE, DSBPE, and and l, the main, the various biotin-PE dispersions exhibited unusual phases, other than the lamellar gel and fluid phases that are found normally with long-chain diacyl phospholipids.…”