高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (7): 1241.

• 研究论文 • 上一篇    下一篇

新颖的蛋白质格点模型

章林溪1, 赵得禄2   

  1. 1. 浙江大学物理系, 杭州 310028;
    2. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2000-08-02 出版日期:2001-07-24 发布日期:2001-07-24
  • 通讯作者: 章林溪(1966年出生),男,博士,教授,主要从事高分子凝聚态物理研究.
  • 基金资助:

    国家自然科学基金(批准号:19874021);国家重点基础研究专项经费(批准号:95-预-12和G1999064800)

A New Protein Lattice Model

ZHANG Lin-Xi1, ZHAO De-Lu2   

  1. 1. Department of Physics, Zhejiang University, Hangzhou 310028, China;
    2. Polymer Physics Laboratory, Center of Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2000-08-02 Online:2001-07-24 Published:2001-07-24

PDF (PC)

被引次数

5

摘要： 提出了建立在键长涨落模型基础上的蛋白质格点模型,通过对二维蛋白质分子的构象研究,发现这种蛋白质分子具有更多的紧密接触对、更低的基态能量和更大的平均紧密度.蛋白质分子的构象数与键数目N的关系为:Ω0～γN,这里γ=4.768.同时与二维的正方形蛋白质格点模型进行了比较.

关键词: 蛋白质分子, 键长涨落模型, 构象, 紧密接触对

Abstract: Anew protein lattice model basing on the bond fluctuation model is performed in this paper. Through investigation of two-dimensional protein structure using our lattice model, we find that our two-dimensional protein chains have more contacts. The conformations Ω0 may be expressed as Ω0=γN, here Nis chain length and γ =4768, and the average compactness < ρ(N) > is close to 0.31-0.32. For the given HPsequences, our protein lattices have lower ground state energies. Comparisons with two-dimensional square lattice model are also made.

Key words: Protein, Bond fluctuation model, Conformation, Contact

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