Kinetics of pretransition in multilamellar dimyristoylphosphatidylcholine vesicle. X-ray diffraction study

The time course of transformation between P' beta phase ad L' beta phase in multilamellar dimyristoylphosphatidylcholine vesicle containing 50% water was followed by small-angle X-ray diffraction. The transformation of P' beta leads to L' beta was 90% complete at 7 min after the temperature jump, although imperfections remained for a long time. Transformation in the opposite direction was fast as compared with P' beta leads to L' beta.