原始细胞分子进化的数学模型

D. Myszor, K. Cyran
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引用次数: 6

摘要

在这篇文章中,我们分析了RNA多核苷酸在一个封闭的环境中出现的过程,在RNA世界的早期阶段。因此,我们准备了一个数学模型,由一组微分方程组成,它模拟了一个由原始细胞膜包围的早期生物系统的行为。有证据表明,原始地球上有封闭的环境。也有实验证明,RNA链可以在这些结构中形成。所提出的模型允许分析膜渗透率对内部材料组成的影响。它考虑了导致RNA链延伸(连接)、分子裂变(磷酸二酯键断裂)和多核苷酸复制的现象。从该模型得到的结果指出,原始细胞的存在可能支持物质的浓缩和更长的分子的产生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mathematical modelling of molecule evolution in protocells
In this article, we analyse the process of the emergence of RNA polynucleotides located in an enclosed environment, at an early stage of the RNA world. Therefore we prepared a mathematical model, composed of a set of differential equations, which simulates the behaviour of an early biological system bounded by a protocell membrane. There is evidence that enclosed environments were available on the primordial Earth. There are also experimental proofs that RNA strands can develop in these formations. The proposed model allows analysis of the influence of membrane permeability on the composition of internal material. It takes into account phenomena that lead to the elongation of an RNA strand (ligation), fission of molecules (phosphodiester bond breakage) and replication of polynucleotides. Results obtained from the model point out that the existence of protocells might support concentration of material and creation of longer molecules.
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