The Trend of Amino-Acid Gain is Consistent with a Doublet Code

Author(s): Raphael Finkel, Heinz Kohler

Journal Name: Current Proteomics

Volume 7 , Issue 3 , 2010

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The present-day genetic code, while universal, is not the result of a “frozen accident”, but has evolved over time. Analysis of amino-acid frequency has recently identified amino acids that were recruited early and late into the genetic code. We use this observation to lend support to a hypothesis that the current quaternary triplet genetic code comes from an earlier quaternary doublet code, and before that from a binary singlet code.

Keywords: Evolution, genetic code, binary code, code capture, triplet, codons, aminoacids, Amino-acid gain, Doublet Code, Amino acid frequency, Frozen accident, Quaternary triplet genetic, Triplet code, Nucleotides, Hypothetical primordial, Jordan's gainers, Singlet genetic code, Triplet slots, Hydrophathy character, TAL-type III, Doublet codons

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Article Details

Year: 2010
Page: [209 - 211]
Pages: 3
DOI: 10.2174/157016410792928125
Price: $25

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