Optimal size for emergence of self-replicating polymer system
Optimal size for emergence of self-replicating polymer system
复制标题
自复制聚合物系统出现的最佳尺寸
DOI：
10.1103/physreve.93.032503
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Y. J. Matsubara and K. Kaneko
中科院分区：
文献类型：
--
作者：
山本昌宏;田口 智也，貝原 俊也，藤井 信忠，國領 大介;西野吉則;伊山修;Y. J. Matsubara and K. Kaneko
生物系统由多种聚合物组成，这些聚合物是由单体通过催化作用合成的，这种催化作用只存在于一些长聚合物中。阐明这种自催化聚合的产生和维持是很重要的。本文对随机聚合反应动力学进行了分析，研究了从几乎没有催化剂状态到有足够催化剂状态的过渡时间。我们找到了一个最佳体积，使这个过渡时间最小化，这与分离两种状态的不稳定固定点催化剂浓度的反比一致，正如理论上解释的那样。与生命起源的相关性也进行了讨论。
A biological system consists of a variety of polymers that are synthesized from monomers by catalysis, which exists only for some long polymers. It is important to elucidate the emergence and sustenance of such autocatalytic polymerization. We analyze here the stochastic polymerization reaction dynamics to investigate the transition time from a state with almost no catalysts to a state with sufficient catalysts. We found an optimal volume that minimizes this transition time, which agrees with the inverse of the catalyst concentration at the unstable fixed point that separates the two states, as is theoretically explained. Relevance to the origin of life is also discussed.