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首页> 外文期刊>Journal of Physical Organic Chemistry >How can a chemical system act purposefully? Bridging between life and non-life
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How can a chemical system act purposefully? Bridging between life and non-life

机译：化学系统如何有目的地起作用？生命与非生命之间的桥梁

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摘要

One of life's most striking characteristics is its purposeful (teleonomic) character, a character already evident at the simplest level of life - a bacterial cell. But how can a bacterial cell, effectively an aqueous solution of an assembly of biornolecules and molecular aggregates within a membrane (that is itself a macromolecular aggregate), act purposefully? In this review, we discuss this fundamental question by showing that the somewhat vague concept of purpose can be given precise physicochernical characterization, and can be shown to derive directly from the powerful kinetic character of the replication reaction. At the heart of our kinetic model is the idea that the stability that governs replicating systems is a dynamic kinetic stability, one that is distinctly different to the thermodynamic stability that dominates the inanimate world. Accordingly, living systems constitute a kinetic state of matter as opposed to the thermodynamic states that dominate the inanimate world. Thus, the model is able to unite animate and inanimate within a single conceptual framework, yet is able to account for life's unique characteristics, amongst them its purposeful character. As part of that unification, it is demonstrated that key Darwinian concepts are special examples of more general chemical concepts. Implications of the model with regard to the possible synthesis of living systems are discussed.
机译：生命中最引人注目的特征之一是其有目的性（目的性）特征，即在最简单的生命水平即细菌细胞中就已经很明显的特征。但是，细菌细胞（有效地是膜中的生物分子和分子聚集体（本身就是大分子聚集体）的集合体的水溶液）如何有目的地起作用？在这篇综述中，我们通过显示可以对目的有些模糊的概念进行精确的物理化学表征，并可以直接从复制反应的强大动力学特性中得出来讨论这个基本问题。我们动力学模型的核心思想是，控制复制系统的稳定性是一种动态动力学稳定性，它与主导无生命世界的热力学稳定性明显不同。因此，与主导无生命世界的热力学状态相反，生命系统构成了物质的动力学状态。因此，该模型能够在单个概念框架内结合生命和无生命，但能够考虑生活的独特特征，其中包括生命的有目的性。作为这种统一的一部分，事实证明，关键的达尔文主义概念是更一般的化学概念的特殊示例。讨论了该模型对生命系统可能的合成的影响。

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