Abstract
THE biosynthesis of proteins involves the formation and stepwise elongation of peptide chains starting from the N-terminal amino-acid1. The order of addition of different amino-acid residues is under genetic control and is determined by the sequence of bases in messenger RNA, each amino-acid being specified by a codon consisting of three nucleotides2,3. The nature of the genetic code has been elucidated largely by using synthetic oligo and poly-nucleotides as artificial messengers, and at the present time sixty-one of the sixty-four possible triplets have been assigned to one or other of the twenty protein amino-acids. Of the remaining triplets, two seem to be involved in chain termination and the function of the third is still uncertain3.
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ARNSTEIN, H., RAHAMIMOFF, H. Haemoglobin Initiation in Protein Synthesis by Animal Cells and the Universality of the Genetic Code. Nature 219, 942–944 (1968). https://doi.org/10.1038/219942a0
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DOI: https://doi.org/10.1038/219942a0
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