NUCLEOTIDES

Purines are heterocyclic aromatic organic compound that consist of a pyrimidine ring fused to an imidazole ring. Purines are the larger of the two types of bases found in DNA. Adenine (A) and guanine (G) are purines. Adenine is always paired with thymine, and guanine is always paired with cytosine. Purines unlike pyrimidines (which have […]

Nucleotides are nucleosides with one or more phosphate groups covalently attached to the 3′ or 5′-hydroxyl group(s) (OH–) of a pentose sugar. A nucleoside is one of the four (4) DNA bases (i.e. adenine, guanine, cytosine and thymine) covalently attached to the carbon-one (C1) position of a sugar molecule such as the pentose sugar. Deoxyribose