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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 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 A nucleoside can also be defined as a nucleotide without a phosphate group attached to it
  • 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 - Definition and Examples - Biology Online Dictionary
    A nucleoside is a glycoside formed from the hydrolysis of nucleic acid When a phosphate group is covalently attached to the pentose sugar of a nucleoside, it forms a nucleotide
  • NUCLEOSIDES, NUCLEOTIDES, DNA, AND RNA - McGraw Hill Medical
    Five major nucleoside bases are common in human biology, including the purines (two-ring structure) adenine and guanine (top) and the pyrimidines (one-ring structure) cytosine, uracil, and thymine (middle)
  • Nucleosides: Structure, Types, Roles, and Medical Applications
    This distinction determines the nucleoside’s role in either RNA or DNA The structural diversity of nucleosides arises from the variation in their nitrogenous bases Purine bases, such as adenine and guanine, consist of a double-ring structure, while pyrimidine bases, like cytosine, thymine, and uracil, have a single-ring configuration
  • Nucleotides and Nucleosides - Definition, Structure, Function, Types . . .
    A nucleoside is made up of just a nucleobase (also called a nitrogenous base) and a five-carbon sugar (ribose or 2′-deoxyribose), while a nucleotide is made up of a nucleobase, a five-carbon sugar, and one or more phosphate groups
  • Nucleoside - an overview | ScienceDirect Topics
    A nucleoside is a structural component of DNA that is made up of a nucleobase and a pentose sugar molecule, whereas a nucleotide is made up of a pentose sugar molecule connected to a phosphate group and nitrogen that contains purine and pyrimidine bases From: Seminars in Cancer Biology, 2022 About this page Add to Mendeley Set alert





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