在活性噪声下在粘弹性介质中穿越屏障:克莱默斯流量超积累方法的预测
1Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India.
The Journal of chemical physics
|July 1, 2024
概括
细胞生化活动会产生水力动力学波动,影响酶催化. 一个新的分析模型显示,超热噪声加快了穿越障碍的速度,在特定条件下有可能大幅提高速度.
科学领域:
- 生物物理学的生物物理.
- 化学物理 化学物理
- 软物质物理学 软物质物理学
背景情况:
- 细胞生化活动可以产生水力动力学波动.
- 这些波动可能会影响酶催化率.
- 之前的研究使用模拟来探索噪音对跨越障碍物的影响.
研究的目的:
- 开发一个完全分析的解决方案,以噪声驱动的障碍穿越.
- 为了结合与细胞内部相关的粘弹性记忆效应.
- 为了研究外热噪声对反应速率的影响.
主要方法:
- 障碍穿越问题的分析解决方案.
- 克拉默斯的流量超人口形式主义.
- 包括粘弹性记忆和大热层噪声.
主要成果:
- 气流噪声始终加速跨越障碍物的速度.
- 加速的程度取决于噪声持续时间 (τ0).
- 在克莱默斯理论破碎的地方存在一个关键的t0 ,导致显著的速率提升.
结论:
- 热量噪声是调节生化反应速率的关键因素.
- 粘性弹性和噪声持续时间对催化作用具有重要影响.
- 预测的巨大增强可以通过光学捕捉技术进行实验测试.
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