Fate of Prebiotic Adenine

被引：38

作者：

Cohn, Corey A. ^{[1
]}

Hansson, Thomas K. ^{[1
]}

Larsson, Hakan S. ^{[1
]}

Sowerby, Stephen J. ^{[1
]}

Holm, Nils G. ^{[1
]}

机构：

[1] Stockholm Univ, Dept Geol & Geochem, SE-10691 Stockholm, Sweden

来源：

ASTROBIOLOGY | 2001年 / 1卷 / 04期

基金：

瑞典研究理事会;

关键词：

Abiotic; Crystal; Hydrothermal; Origin of life; Template;

D O I：

10.1089/153110701753593874

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Equilibrium adsorption isotherm data for the purine base adenine has been obtained on several prebiotically relevant minerals by frontal analysis using water as a mobile phase. Adenine is far displaced toward adsorption on pyrite (FeS2), quartz (SiO2), and pyrrhotite (FeS), but somewhat less for magnetite (Fe3O4) and forsterite (Mg2SiO4). The prebiotic prevalence of these minerals would have allowed them to act as a sink for adenine; removal from the aqueous phase would confer protection from hydrolysis as well, establishing a nonequilibrium thermodynamic framework for increased adenine synthesis. Our results provide evidence that adsorption phenomena may have been critical for the primordial genetic architecture.

引用

页码：477 / 480

页数：4

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