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Genetic Code Evolution in the RNA World and Beyond

  • Robin D. Knight
Part of the Natural Computing Series book series (NCS)

Abstract

Although the translation apparatus presumably arose in an RNA world, subsequent modifications obscure its origins. The genetic code, fixed in the Last Universal Ancestor may contain clues about the types of chemical interaction that led to early correspondences between RNA and protein. The extent to which contemporary translation reflects these primordial influences depends on the processes that have shaped the genetic code since its inception: stereochemical interaction between amino acids and RNA, historical constraints ensuring continuity between successive codes, and optimization to minimize the effects of errors caused by translation and mutation. This chapter explains how these processes, typically presented as mutually antagonistic, may actually be viewed as complementary on different timescales, and I suggest how the “first” codons could have been established in the context of an RNA world.

Keywords

Genetic Code Prebiotic Synthesis Murchison Meteorite Canonical Genetic Code Universal Ancestor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer-Verlag Berlin Heidelberg 2002

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  • Robin D. Knight

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