Fig. 3.
5-Fluorodeoxyuracil pairing with adenine in DNA. The fluorine molecule is at the 5 position (arrow), and does not interfere with hydrogen binding with adenine, but is recognized by DNA mismatch repair proteins.
5-Fluorodeoxyuracil pairing with adenine in DNA. The fluorine molecule is at the 5 position (arrow), and does not interfere with hydrogen binding with adenine, but is recognized by DNA mismatch repair proteins.