Montmorillonite-catalysed formation of RNA oligomers: the possible role of catalysis in the origins of life

被引:164
作者
Ferris, James P. [1 ]
机构
[1] Rensselaer Polytech Inst, Dept Chem & Chem Biol, Troy, NY 12180 USA
[2] Rensselaer Polytech Inst, New York Ctr Studies Origins Life, Troy, NY 12180 USA
关键词
prebiotic; montmorillonite catalysis; ribonucleic acid; origin of life; sequence;
D O I
10.1098/rstb.2006.1903
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Large deposits of montmorillonite are present on the Earth today and it is believed to have been present at the time of the origin of life and has recently been detected on Mars. It is formed by aqueous weathering of volcanic ash. It catalyses the formation of oligomers of RNA that contain monomer units from 2 to 30-50. Oligomers of this length are formed because this catalyst controls the structure of the oligomers formed and does not generate all possible isomers. Evidence of sequence-, regio- and homochiral selectivity in these oligomers has been obtained. Postulates on the role of selective versus specific catalysts on the origins of life are discussed. An introduction to the origin of life is given with an emphasis on reaction conditions based on the recent data obtained from zircons 4.0-4.5 Ga.
引用
收藏
页码:1777 / 1786
页数:10
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