arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.05944cond-mat.stat-mechphysics.bio-ph
收藏

生物分子过程的热力学不确定关系

Thermodynamic uncertainty relation for biomolecular processes

Andre C. Barato, Udo Seifert

摘要:

生物分子系统如分子马达或泵、转录和翻译机器以及其他酶促反应可以被描述为合适网络上的马尔可夫过程。我们表明,相当普遍的,在稳定状态下的分散的可观的像消耗/产生的分子的数量或电机的步骤的数量是受热力学成本产生it.A不确定性$ε$至少需要一个成本$2k_BT/ε^2$独立的时间所需的输出。

英文摘要:

Biomolecular systems like molecular motors or pumps, transcription and translation machinery, and other enzymatic reactions can be described as Markov processes on a suitable network. We show quite generally that in a steady state the dispersion of observables like the number of consumed/produced molecules or the number of steps of a motor is constrained by the thermodynamic cost of generating it. An uncertainty $ε$ requires at least a cost of $2k_BT/ε^2$ independent of the time required to generate the output.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑