高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 91.

• 研究论文 • 上一篇    下一篇

Influence of La3+ on the Phase Behavior and the Pluidity of Phospholipid Bilayers

LI Xin-min1, ZHAO Bing2, NI Jia-zuan1, WU Ying2, XU Wei-qing2, CHEN Jian-Wen3   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China;
    2. Key Laboratory for Molecular Spectra and Structure, Jilin University, Changchun, 130023 P. R. China;
    3. State Key Laboratory of Biomacromolecuies, Institute of Biophysics Chinese Academy of Sciences, Beijing, 100101, P. R. China
  • 收稿日期:1995-07-31 出版日期:1995-12-31 发布日期:1995-12-31
  • 基金资助:

    National Program "the Basic Research of Rare Earth Science" of China and the National Natural Science Foundation of China

Influence of La3+ on the Phase Behavior and the Pluidity of Phospholipid Bilayers

LI Xin-min1, ZHAO Bing2, NI Jia-zuan1, WU Ying2, XU Wei-qing2, CHEN Jian-Wen3   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China;
    2. Key Laboratory for Molecular Spectra and Structure, Jilin University, Changchun, 130023 P. R. China;
    3. State Key Laboratory of Biomacromolecuies, Institute of Biophysics Chinese Academy of Sciences, Beijing, 100101, P. R. China
  • Received:1995-07-31 Online:1995-12-31 Published:1995-12-31
  • Supported by:

    National Program "the Basic Research of Rare Earth Science" of China and the National Natural Science Foundation of China

PDF (PC)

摘要：

The influence of La3+ on the phase behavior and the fluidity of the negatively charged phospholipid dipalmitoylphosphatidylglycerol(DPPG) bilayers was studied by differential scanning calorimetry (DSC) and FT-Raman spectroscopy. La3+, induced a phase separation of DPPG bilayers, and formed three peaks. La3+ increased the phase transition temperature of the new peaks, broadened the half width of the DSC signal, and stabilized a gel phase relative to a crystalline phase of DPPG bilayers. La3+ was shown to increase interchain order and intermolecular ordering of the lipid lattice, and decreased the fluidity of DPPG bilayers.

关键词: Phase bahavior, Phospholipid, Dipalmitoylphosphatidylglycerol

Abstract:

The influence of La3+ on the phase behavior and the fluidity of the negatively charged phospholipid dipalmitoylphosphatidylglycerol(DPPG) bilayers was studied by differential scanning calorimetry (DSC) and FT-Raman spectroscopy. La3+, induced a phase separation of DPPG bilayers, and formed three peaks. La3+ increased the phase transition temperature of the new peaks, broadened the half width of the DSC signal, and stabilized a gel phase relative to a crystalline phase of DPPG bilayers. La3+ was shown to increase interchain order and intermolecular ordering of the lipid lattice, and decreased the fluidity of DPPG bilayers.

Key words: Phase bahavior, Phospholipid, Dipalmitoylphosphatidylglycerol

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