Description: Purine (7H-Imidazo(4,5-d)pyrimidine) is a heterocyclic aromatic organic compound, consisting of a pyrimidine ring fused to an imidazole ring. Two of the bases in nucleic acids, adenine and guanine, are purines. Purines from food (or from tissue turnover) are metabolised by several enzymes, including...

Purine is an aromatic heterocyclic organic compound. It is biosynthesized from amino acids and bicarbonate. Purine is the core structure of the nucleobases adenine (Cay-18148) and guanine, the nucleosides adenosine (Cay-21232) and guanosine (Cay-27702), and the nucleotides, adenosine mono- (AMP, Cay-21094), di-...