Adenine (A) is one of the four nucleotide bases in DNA, with the other three being cytosine (C), guanine (G) and thymine (T). Within a double-stranded DNA molecule, adenine bases on one strand pair with thymine bases on the opposite strand. The sequence of the four nucleotide bases encodes DNA’s information.
Adenine. Adenine, pairing with T in DNA, is usually represented as bonding with two hydrogen bonds, holding the DNA together.
Lawrence Brody, Ph.D.
Division of Genomics and Society