adenine

Adenine is a purine with a variety of roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate (ATP) and the cofactors nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD), and protein synthesis, as a chemical component of DNA and RNA.
See more at Wikipedia.org...

Adenine /ad·e·nine/ a purine base; in plant and animal cells usually occurring complexed with ribose or deoxyribose to form adenosine and [more]Adenine - Community and Resources

Noun
1. (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
(synonym) A
(hypernym) purine
(substance-holonym) deoxyribonucleic acid, desoxyribonucleic acid, DNA
(classification) biochemistry

n. adenine, purine base found in DNA and RNA (biochemistry)

n. adenine