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nucleoside    
核苷; 核甙

核□; 核□

nucleoside
n 1: a glycoside formed by partial hydrolysis of a nucleic acid

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.
[PJC]


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  • Nucleoside - Wikipedia
    A nucleoside consists simply of a nucleobase (also termed a nitrogenous base) and a five-carbon sugar (ribose or 2'-deoxyribose) whereas a nucleotide is composed of a nucleobase, a five-carbon sugar, and one or more phosphate groups
  • Nucleoside | Description, Function Facts | Britannica
    A nucleoside is a structural subunit of nucleic acids, the heredity-controlling components of all living cells, that consists of a sugar molecule linked to a nitrogen-containing organic ring compound
  • Nucleoside vs Nucleotide - Difference and Comparison | Diffen
    A nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group A nucleotide consists of a nitrogenous base, a sugar (ribose or deoxyribose) and one to three phosphate groups
  • Nucleoside- Definition, Types, Structure, Functions
    A nucleoside is a molecule with a pentose sugar linked to a nitrogenous base or glycosylamines without a phosphate group attached to it
  • Nucleoside - an overview | ScienceDirect Topics
    Nucleoside is defined as a molecular structure consisting of a base moiety and a sugar moiety, playing key roles in neurotransmission, cardiovascular regulation, and as signaling molecules, as well as serving as intermediates in essential cellular biosynthetic pathways
  • Biologically Active Nucleosides - PMC
    The first nucleoside analog that came on the market for treatment of HIV was zidovudine (Fig 1), and it was followed by didanosine, zalcitabine, stavudine, lamivudine, abacavir, and emtricitabine (Fig 4)
  • Nucleoside analogues and nucleobases in cancer treatment
    Nucleoside analogues and nucleobases are a pharmacologically diverse family, which includes cytotoxic compounds, antiviral agents, and immunosuppressive molecules The anticancer nucleosides include several analogues of physiological pyrimidine and purine nucleosides and nucleobases The two primary purine analogues are cladribine and fludarabine





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