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关于遗传密码的建立以及信息从类蛋白向核酸转移的假说

[Hypotheses on the establishment of a genetic code and transfer of information from proteinoids to nucleic acids].

作者信息

Berger G

出版信息

C R Acad Sci III. 1984;299(9):333-8.

PMID:6439392
Abstract

An hypothesis is proposed in which the specificity of interaction between an aminoacid and a nucleotide sequence of a tRNA would be enhanced by a ternary association with a specific proteinoid. These strict relations would have led to the present genetic code that we know. It is also proposed that the origin of the enzymatic activity of the primitive proteinoids would have arisen from the presence of different substrates during polymerisation, which would have favored specific sequences of aminoacids by forming more stable complexes with them, corresponding to the lowest free enthalpy. The information included in the aminoacid sequences of the proteinoids would have been transferred to messenger type RNA, according to a mechanism reverse of that for the present process for protein synthesis, and then to DNA.

摘要

提出了一种假说,即氨基酸与tRNA核苷酸序列之间的相互作用特异性会因与特定类蛋白的三元缔合而增强。这些严格的关系会导致我们所知的当前遗传密码的形成。还提出原始类蛋白的酶活性起源于聚合过程中不同底物的存在,这些底物通过与氨基酸形成更稳定的复合物(对应于最低自由焓)而有利于氨基酸的特定序列。类蛋白氨基酸序列中包含的信息会根据与当前蛋白质合成过程相反的机制转移到信使型RNA,然后再转移到DNA。

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