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Dictionary » N » Nucleoside

Nucleoside

Definition

noun, plural: nucleosides

(1) A nitrogenous base (purine or pyrimidine) bound to a pentose sugar ribose or deoxyribose.

(2) A glycoside formed from the hydrolysis of nucleic acid.


Supplement

A phosphate group attached to a nucleoside would make a nucleotide.

Depending on the pentose sugar component, a nucleoside may be a ribonucleoside (e.g. adenosine, guanosine, cytidine, and uridine) or a deoxyribonucleoside (e.g. deoxyadenosine, deoxyguanosine, deoxycytidine, deoxythymidine).


Word origin: nucleic- from nucleus + -ose + -ide.

Related terms: nucleoside analogue, nucleoside diphosphate.

Compare: nucleotide.
See also: nucleic acid.


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Re: Crosswords will be the death of me..

... but unless you're supposed to use the acronym that would be a rather long entry spelled-out. I suppose "nucleotide kinase" or "nucleoside kinase" are possibilities, though again, these are a bit longish for cross word puzzles.

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by blcr11
Thu Oct 16, 2008 8:55 am
 
Forum: Cell Biology
Topic: Crosswords will be the death of me..
Replies: 9
Views: 780

Terminology

can someone define these terms or maybe a brief description, I'm getting confused with all of them nucleotide nucleoside dideoxynucleoside dNTP AMP

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by dakims
Tue Sep 02, 2008 2:48 am
 
Forum: General Discussion
Topic: Terminology
Replies: 2
Views: 507

IBO 2003 questions- please help me out

... Catalytic subunit of a DNA – polymerase. 3. Histone H1. 4. Prolamines (storage proteins of cereals). (A hint will do - how will i go about it?) B: Nucleoside phosphates can be interphosphorylated enzymatically. Which one of the following reactions is impossible? А. ADP + ADP = AMP + ATP. В. AMP ...

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by tittu
Mon May 12, 2008 2:34 pm
 
Forum: Cell Biology
Topic: IBO 2003 questions- please help me out
Replies: 9
Views: 1557

About viral diseases...

... the genetic material of the virus and the processes that involving viruses' genetic material. Example is AZT for HIV treatment which is an nucleoside analogs for integrase, so the enzyme integrates the DNA virus (via reverse transcriptase) into this nucleoside analog, not into the host ...

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by victor
Sat Oct 20, 2007 5:28 am
 
Forum: Microbiology
Topic: About viral diseases...
Replies: 27
Views: 5065

Chromatography Quick Question

... And when you say "RNA" and "DNA" are we talking about single nucleotides (base + sugar + at least 1 phosphate), nucleosides (base + sugar but no phosphate) or polymers of same (i.e. oligonucleotides of RNA or DNA)? And then the reagent used to detect the material ...

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by blcr11
Wed Apr 04, 2007 7:14 pm
 
Forum: Molecular Biology
Topic: Chromatography Quick Question
Replies: 3
Views: 607
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