生物大分子的动力学特征对其结构和生物学功能均有重要影响。本文利用分子动力学模拟研究了四个不同类型的生物大分子。 类弹性蛋白多肽(ELPs)在室温下可溶,但当温度高于其相变温度(Tt)时沉淀析出,异于普通蛋白质。ELP-KV8F在NVT系综分子动力学模拟结果显示其在盐溶液中收缩更为剧烈,ELP-KV8F在水溶液中收缩程度最强的温度为375K,而在1MNaCl盐溶液中则为350K。在较低温度条件下,升高温度使ELP-KV8F分子收缩程度更剧烈,当温度升高到一定极限后这种变化趋势反转;该极值温度可能影响ELPs的相变温度。 模拟了NPT系综600K温度下的24对嗜热-嗜温同源蛋白,所有蛋白都在1...The dynamics motions of the macro biomolecules are important for their biological functions. Four different kinds of biomolecular systems have been simulated using molecular dynamics (MD) simulations. Elastic-like peptides (ELPs) can be solvated well in the water solution at room temperature. However, different from the normal proteins, ELPs precipitate at a temperature higher than its transit...学位:理学博士院系专业:化学化工学院_化学生物学学号:2052010015364