Problemas insuperáveis do surgimento do código genético em um mundo RNA

terça-feira, maio 30, 2017

Insuperable Problems Of The Genetic Code Initially Emerging In An RNA World

Peter Wills, Charles Carter


This article is a preprint and has not been peer-reviewed [what does this mean?].

Source/Fonte: Friendly Atheist


Abstract

Differential equations for error-prone information transfer (template replication, transcription or translation) are developed in order to consider, within the theory of autocatalysis, the advent of coded protein synthesis. Variations of these equations furnish a basis for comparing the plausibility of contrasting scenarios for the emergence of tRNA aminoacylation, ultimately by enzymes, and the relationship of this process with the origin of the universal system of molecular biological information processing embodied in the Central Dogma. The hypothetical RNA World does not furnish an adequate basis for explaining how this system came into being, but principles of self-organisation that transcend Darwinian natural selection furnish an unexpectedly robust basis for a rapid, concerted transition to genetic coding from a peptide-RNA world.

Copyright 

The copyright holder for this preprint is the author/funder. All rights reserved. No reuse allowed without permission.

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