The simplest way to decipher the code would be to start with an mRNA molecule of known sequence, use it to direct the synthesis of a protein, and then determine the amino acid sequence of the ...

Tsugita, A., & Fraenkel-Conrat, H. The amino acid composition and C-terminal sequence of a chemically evoked mutant of TMV. Proceedings of the National Academy of Sciences 46, 636–642 (1960) ...