New phases of DPPC/water mixtures.
Hydration of DPPC at low temperatures yielded two new phases, a non-lamellar C1 phase and a lamellar C2 phase, as well as the normal gel phase, depending upon the initial physical state of the dry lipid. From the results of wide-angle diffraction and calorimetry the C2 phase appears very similar to the normal C phase, but the D spacing is considerably larger, suggesting that the C2 phase is a C phase with untilted chains.
Yang
C P
CP
Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213.
Wiener
M C
MC
Nagle
J F
JF
D015060:1,2-Dipalmitoylphosphatidylcholine; D002152:Calorimetry, Differential Scanning; D008081:Liposomes; D008962:Models, Theoretical; D013816:Thermodynamics; D014867:Water
D008081:Liposomes; D014867:Water; D015060:1,2-Dipalmitoylphosphatidylcholine