Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (14): 1285-1288.     Next Articles

Communications

电解质对带电磷脂自组装行为的影响

林美玉, 李莉, 邱枫, 杨玉良*   

  1. (复旦大学高分子科学系 聚合物分子工程教育部重点实验室 上海 200433)
  • 投稿日期:2006-12-30 修回日期:2007-03-16 发布日期:2007-07-28
  • 通讯作者: 杨玉良

Effects of Electrolytes on the Assembling Structures of Charged Lipids

LIN Mei-Yu; LI Li; QIU Feng; YANG Yu-Liang*   

  1. (The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433)
  • Received:2006-12-30 Revised:2007-03-16 Published:2007-07-28
  • Contact: YANG Yu-Liang

The effects of electrolytes on the assembling structures of cardiolipin were studied by microscopy. The results show that the assembling structures greatly depend on the concentration and valency of cations, rather than their types or ionic radii. Myelin figures, consisting of concentric cylindrical membranes, appear in the certain concentration range of univalent electrolyte. The kinds and concentration of electrolyte do not influence the scaling relationship between the myelin length L and its growing time t. Besides the normal shape of myelin figures, single, double or even super helixes were found when the electrolyte concentration increased.

Key words: charged membrane, electrolyte, cardiolipin, myelin