adenine

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adenine (ăd´ənĬn, –nīn, –nēn), organic base of the purine family. Adenine combines with the sugar ribose to form adenosine, which in turn can be bonded with from one to three phosphoric acid units, yielding the three nucleotides adenosine monophosphate, adenosine diphosphate, and adenosine triphosphate. These adenine derivatives perform important functions in cellular metabolism. Adenine is one of four nitrogenous bases utilized in the synthesis of nucleic acids. A modified form of adenosine monophosphate is thought to be a secondary messenger in the propagation of many hormonal stimuli. Adenine is an integral part of the structure of many coenzymes.

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adenine A nucleotide, one of the purine bases of the nucleic acids (DNA and RNA). The compound formed between adenine and ribose is the nucleoside adenosine, and can form four phosphorylated derivatives important in metabolism: adenosine monophosphate (AMP, also known as adenylic acid); adenosine diphosphate (ADP); adenosine triphosphate (ATP); and cyclic adenosine monophosphate (cAMP). See also ATP; energy metabolism.

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adenine A purine base found in nucleic acids. See also cytosine, guanine, and thymine.

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adenine A purine derivative. It is one of the major component bases of nucleotides and the nucleic acids DNA and RNA.

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ad·e·nine / ˈadnˌēn; -ˌīn/ • n. Biochem. a compound, C5H5N5, that is one of the four constituent bases of nucleic acids. A purine derivative, it is paired with thymine in double-stranded DNA.

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adenine A purine base which occurs in both DNA and RNA.

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adenine A purine base which occurs in both DNA and RNA.

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adenine (ad-ĕ-neen) n. one of the nitrogen-containing bases (see purine) that occurs in the nucleic acids DNA and RNA. See also ATP.