deoksiribionukleosida

Deoxyribonucleoside is a nucleoside composed of a deoxyribose sugar and a nucleobase. Deoxyribose is a five-carbon sugar that differs from ribose by the absence of an oxygen atom at the 2' carbon. The nucleobases commonly found in deoxyribonucleosides are adenine (A), guanine (G), cytosine (C), and thymine (T). When linked to deoxyribose, these form deoxyadenosine, deoxyguanosine, deoxycytidine, and deoxythymidine, respectively. These molecules are the building blocks of DNA, the genetic material in most living organisms. Each deoxyribonucleoside is a monomer unit that, when polymerized, forms a strand of deoxyribonucleic acid. The specific sequence of these nucleobases along the DNA strand carries the genetic code. Deoxyribonucleosides can be phosphorylated to form deoxyribonucleotides, which are the actual monomers incorporated into DNA during synthesis. Understanding deoxyribonucleosides is fundamental to comprehending DNA structure, function, and replication.