adeniny
Adenine is a nucleobase found in DNA and RNA, playing a crucial role in the genetic code of living organisms. It is one of the five nucleobases that form the building blocks of nucleic acids, the other four being guanine, cytosine, thymine, and uracil. Adenine is a purine, meaning it contains a six-membered ring fused to a five-membered ring. In DNA, adenine pairs with thymine through two hydrogen bonds, while in RNA, it pairs with uracil through the same number of hydrogen bonds. This base pairing is fundamental to the structure and function of nucleic acids, as it allows for the accurate replication and transcription of genetic information. Adenine is also a component of adenosine triphosphate (ATP), a molecule that serves as the primary energy carrier in cells. The discovery of adenine's role in genetics and energy metabolism has significantly contributed to our understanding of biological processes.