Crossword clues for nucleoside
The Collaborative International Dictionary
nucleoside \nucleoside\ n. (Biochem.) A type of molecule found in all living organisms, present mostly in chemically combined form as a component of nucleic acids, and also in smaller amounts in free form, consisting of a pentose sugar bound to a purine or pyrimidine base; two types of nucleoside, ribonucleoside and deoxyribonucleoside, are present. The most common bases present in nucleosides are adenine, cytosine, uracil, guanine, and thymine, and to a lesser extent hypoxanthine and other bases are found. The most commmon ribonucleosides composed from these bases are called adenosine, cytidine, uridine, and guanosine. The forms esterified with orthophosphoric at the 5-position of the pentose are called nucleotides. The nucleotides form the monomer units which are combined into DNA and RNA, which carry the genetic information required for reproduction in all known organisms.
Wiktionary
n. (context biochemistry English) an organic molecule in which a nitrogenous heterocyclic base (or nucleobase), which can be either a double-ringed purine or a single-ringed pyrimidine, is covalently attached to a five-carbon pentose sugar (deoxyribose in DNA or ribose in RNA). When the phosphate group is covalently attached to the pentose sugar, it forms a nucleotide.
WordNet
n. a glycoside formed by partial hydrolysis of a nucleic acid
Usage examples of "nucleoside".
We tried everything against that virus we could think of, but none of the usual nucleoside analogues made a dent in its multiplication.
Pharmaceutical companies are trying combinations of nucleoside analogue reverse transcriptase inhibitors, everything from Abacavir to Zidovudine, to hit Rhesus.
The virus mistakes the drug components for natural nucleosides and subsequently incorporates them into the synthesis of viral DNA.
They already know that neither successful AIDS drugs nor stealth nucleosides work.