Adenine

Adenine is one of the four main building blocks of DNA and RNA, the molecules that carry genetic information in living organisms. It is a nitrogenous base, a chemical compound containing nitrogen atoms, and pairs specifically with thymine in DNA and uracil in RNA. Adenine plays a crucial role in storing and transmitting genetic instructions, and also participates in cellular energy transfer through molecules like ATP (adenosine triphosphate). Its structure is a double-ring shape called a purine, making it essential for the structure and function of genetic material and energy processes in cells.