Adenine is one of the four nucleic bases in the nucleic acid of DNA, along with Cytosine, Guanine, and Thymine. Adenine is paired with the nucleic acid thymine in DNA strains. Derivatives of this molecule, such as Adenosine Triphosphate (ATP), Nicotinamide Adenine Dinucleotide (NAD), and Flavin Adenine Dinucleotide (FAD), play a large role in cellular respiration. For example, ATP is the base energy currency in our bodies, and NAD and FAD are crucial in synthesizing ATP through a series of redox reactions. All in all, Adenine is not only used in DNA and RNA but is also used for storing energy in the cell. The formula for Adenine is C5H5N5.