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Formation of the Codon Degeneracy during Interdependent Development between Metabolism and Replication.


ABSTRACT: Nirenberg's genetic code chart shows a profound correspondence between codons and amino acids. The aim of this article is to try to explain the primordial formation of the codon degeneracy. It remains a puzzle how informative molecules arose from the supposed prebiotic random sequences. If introducing an initial driving force based on the relative stabilities of triplex base pairs, the prebiotic sequence evolution became innately nonrandom. Thus, the primordial assignment of the 64 codons to the 20 amino acids has been explained in detail according to base substitutions during the coevolution of tRNAs with aaRSs; meanwhile, the classification of aaRSs has also been explained.

SUBMITTER: Li DJ 

PROVIDER: S-EPMC8701183 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2023-06-28 | GSE235954 | GEO