The triplet genetic code had a doublet predecessor |
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| Authors: | Patel Apoorva |
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| Institution: | Centre for High Energy Physics and Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012, India. adpatel@cts.iisc.ernet.in |
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| Abstract: | Information theoretic analysis of genetic languages indicates that the naturally occurring 20 amino acids and the triplet genetic code arose by duplication of 10 amino acids of class-II and a doublet genetic code having codons NNY and anticodons GNN. Evidence for this scenario is presented based on the properties of aminoacyl-tRNA synthetases, amino acids and nucleotide bases. |
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| Keywords: | Aminoacyl-tRNA synthetases Amino acid R-groups Genetic code |
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