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Did Life Begin on the Beach?

机译：生活从海滩开始吗？

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摘要

Water is one of the prerequisites of life. Further requirements are the existence of a system of interacting organic molecules capable of capturing and converting the supply of external energy and elaborating the replicating function that is needed for propagation. None of this would be possible without the existence of some means of concentrating, selecting, and then containing these mutually interacting substances in proximity to one another, i.e., a primitive cell. Starting from this hypothesis we propose a model for the development of life on Earth. Our model embodies the following new features: (1) rapid cycles of catalysis and transport of material, (2) desegregation (separation by tidal action and degradation by catalysis) as well as segregation (by chromatography on tidal beaches), (3) cross-catalysis instead of auto-catalysis, as well as (4) compartmentalization, although the latter idea is of course not new. But our "lipid first" model, in contrast to earlier "peptide first" or "RNA first" models, provides for the compartments needed to act as a cradle for the subsequent development of information-rich molecules like peptides and RNA. If anything, the earliest information-rich molecules were probably membrane-spanning peptides/proteins.
机译：水是生命的先决条件之一。进一步的需求是存在一种相互作用的有机分子的系统，该系统能够捕获和转换外部能量的供应并完善传播所需的复制功能。如果没有某种集中，选择然后包含彼此邻近的相互相互作用的物质（即原始细胞）的方法，这一切都是不可能的。从该假设出发，我们提出了地球生命发展的模型。我们的模型体现了以下新特征：（1）物质的催化和运输快速循环；（2）分离（通过潮汐作用分离和催化降解）以及分离（通过在潮滩上进行色谱分析），（3）交叉-催化而不是自动催化，以及（4）分区，尽管后者的想法当然并不新鲜。但是，与早期的“肽优先”或“ RNA优先”模型相比，我们的“脂质优先”模型提供了所需的隔室，以充当随后开发诸如肽和RNA之类的信息丰富的分子的摇篮。如果有的话，最早的信息丰富的分子可能是跨膜的肽/蛋白质。

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