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生命起源中的空间信息。

Spatial Information in the Emergence of Life.

作者信息

Cruz-Rosas Hugo I, Miramontes Pedro

机构信息

Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Mexico.

出版信息

Front Genet. 2021 Sep 9;12:672780. doi: 10.3389/fgene.2021.672780. eCollection 2021.

Abstract

Information in living systems is part of a complex relationship between the internal organization and functionality of life. In a cell, both genetic-coding sequences and molecular-shape recognition are sources of biological information. For folded polymers, its spatial arrangement contains general references about conditions that shaped them, as imprints, defining the for spatial (conformational) information. Considering the origin of life problem, prebiotic dynamics of matching and transfer of molecular shapes may emerge as a flow of information in prebiotic assemblages. The property of carrying information in molecular conformations is only displayed at this system organization level. Accordingly, spatial information is a resource for active system responses toward milieu disturbances. Propagation of resilient conformations could be the substrate for structural maintenance through dynamical molecular scaffolding. The above is a basis for adaptive behavior in potentially biogenic systems. Starting from non-structured populations of carrying-information polymers, in the present contribution, we advance toward an entire theoretical framework considering the active role of these polymers to support the emergence of adaptive response in systems that manage conformational information flow. We discuss this scenario as a previous step for the arising of sequential information carried out by genetic polymers.

摘要

生命系统中的信息是生命内部组织与功能之间复杂关系的一部分。在细胞中,遗传编码序列和分子形状识别都是生物信息的来源。对于折叠聚合物,其空间排列包含有关塑造它们的条件的一般参考信息,作为印记,定义了空间(构象)信息。考虑到生命起源问题,分子形状匹配和转移的益生元动力学可能作为益生元组合中的信息流出现。在分子构象中携带信息的特性仅在这个系统组织层面上表现出来。因此,空间信息是系统对环境干扰做出积极响应的一种资源。弹性构象的传播可能是通过动态分子支架进行结构维持的基础。上述内容是潜在生物系统中适应性行为的基础。从携带信息的聚合物的非结构化群体出发,在本论文中,我们朝着一个完整的理论框架迈进,该框架考虑了这些聚合物在管理构象信息流的系统中支持适应性反应出现的积极作用。我们将这种情况作为遗传聚合物执行顺序信息出现的前一步进行讨论。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/991a/8458620/daa6bb67289b/fgene-12-672780-g001.jpg

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