Akiyama M
Biochim Biophys Acta. 1981 Jun 9;644(1):89-95. doi: 10.1016/0005-2736(81)90062-6.
The slow change of the repeat period of multilamellar structures accompanied by a thermal phase transition in dimyristoyl phosphatidylcholine containing 50% water was measured by a small-angle X-ray diffraction method employing the temperature-jump technique. The repeat period immediately after the application of a temperature jump from 25 degrees C (fluid state, L alpha) to 22.5 degrees C (crystalline state, P' beta) was observed to be about 1 A larger than that at the steady state (65.1 A), and was then followed by a decrease to a steady value with a relaxation time of 70 min. The slow decrease in the repeat period seems to be due to the transformation from loosely stacked to closely stacked multilamellar structures, the looseness being caused by the formation of contracted domains in each lamella at an early stage of the phase transition from the fluid to the crystalline state.
采用温度跃升技术的小角X射线衍射法测量了含50%水的二肉豆蔻酰磷脂酰胆碱中伴随热相变的多层结构重复周期的缓慢变化。观察到从25℃（流体态，Lα）跃升至22.5℃（晶态，P'β）后，重复周期立即比稳态时（65.1 Å）大1 Å左右，随后以70分钟的弛豫时间下降至稳态值。重复周期的缓慢下降似乎是由于多层结构从松散堆积转变为紧密堆积，这种松散是由从流体态到晶态的相变早期各片层中收缩域的形成所导致的。
