相关的基于运动的残留网络分析揭示了大豆脂氧化酶中远程热激活
bioRxiv : the preprint server for biology
|December 22, 2025
概括
豆氧化酶 (SLO) 使用特定的途径来引导热能用于酶催化. 计算分析显示,较短的螺旋路径有利于Leu546而不是Leu754,从而解释了实验观测.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 酶动力学 酶动力学
背景情况:
- 酶催化依赖于远距离的热能转移途径.
- 豆氧化酶 (SLO) 呈现出一种特定的能量道网络.
研究的目的:
- 在SLO中提供远程通信的原子分析.
- 系统地选活性部位和暴露于溶剂的残留物之间的通信通路.
主要方法:
- 微秒分子动力学模拟.
- 相关的基于运动的协议用于路径分析.
- 突变分析以评估路径偏好.
主要成果:
- 在SLO.中恢复了实验观察到的热启动循环和Leu546定向的圆.
- 通过更短,相关的螺旋路径,解释了 Leu546 与 Leu754 的偏好.
- 单个站点突变对网络偏好的证明影响.
结论:
- 统一计算和实验数据关于SLO中异性热能导通的热能导通.
- 为计算酶功能的远端蛋白内通路建立一个一般框架.
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