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ribonucleoside    
核糖核苷

核糖核□

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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  • Ribonucleoside - Wikipedia
    A ribonucleoside is a type of nucleoside including ribose as a component [1] One example of a ribonucleoside is cytidine [2] ^ "Ribonucleoside" Science Direct 2007 Retrieved February 3, 2022
  • Ribonucleotide - Wikipedia
    In biochemistry, a ribonucleotide is a nucleotide containing ribose as its pentose component It is considered a molecular precursor of nucleic acids Nucleotides are the basic building blocks of DNA and RNA Ribonucleotides themselves are basic monomeric building blocks for RNA
  • Nucleoside - Wikipedia
    Nucleosides are glycosylamines that can be thought of as nucleotides without a phosphate group 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
  • Ribonucleoside - an overview | ScienceDirect Topics
    Ribonucleosides are adenosine, guanosine, cytidine and uridine You might find these chapters and articles relevant to this topic 2009, Encyclopedia of Microbiology (Third Edition) P Nygaard, H H Saxild Purine ribonucleosides are converted to their corresponding ribonucleotide in two steps in B subtilis
  • Ribonucleoside | definition of ribonucleoside by . . . - Medical Dictionary
    A nucleoside in which the sugar component is ribose; the common ribonucleosides of RNA are adenosine, cytidine, guanosine, and uridine Farlex Partner Medical Dictionary © Farlex 2012 n A nucleoside that contains ribose as its sugar component The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company
  • Ribonucleotide Definition and Examples - Biology Online
    A ribonucleotide is a nucleotide that has a ribose as its sugar component As for the nitrogenous base (or nucleobase) component, the common bases are adenine (A), guanine (G), cytosine (C), and uracil (U)
  • Ribonucleoside Hydrolases–Structure, Functions, Physiological Role and . . .
    Ribonucleoside hydrolases are enzymes that catalyze the cleavage of ribonucleosides to nitrogenous bases and ribose These enzymes are found in many organisms: bacteria, archaea, protozoa, metazoans, yeasts, fungi and plants
  • The ribonucleosides that make up ribonucleic acid (RNA) are compo . . .
    The ribonucleosides that make up ribonucleic acid (RNA) are composed of d-ribose (a sugar) and four heterocyclic “bases ” The general structure of a ribonucleoside is shown here <IMAGE> The four heterocyclic bases are cytosine, uracil, guanine, and adenine
  • 22: Nucleotide Metabolism - Washington State University
    4) produces a nucleoside If the sugar is ribose, a ribonucleoside is produced, and if the sugar is 2-deoxyribose, a deoxyribonucleoside is produced (Fig 22 3A) The ribonucleosides of A, G, C, and U are named adenosine, guanosine, cytidine,
  • RIBONUCLEOSIDE Definition Meaning - Merriam-Webster
    The meaning of RIBONUCLEOSIDE is a nucleoside that contains ribose





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