Figure 1.
(a) The DNA nucleobases adenine (A), guanine (G), cytosine (C), thymine (T), (b) the nucleotide anion 2′-deoxy-guanosine 5′-monophosphate− (dGMP−) and (c) aromatic amino acids tyrosine (Tyr), phenylalanine (Phe) and tryptophan (Trp).
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