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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: Nucleoside analogs and ionizing radiation

... some info on radiation therapy: http://www.cancer.gov/cancertopics/factsheet/Therapy/radiation I should think the same principle would apply with nucleoside analogs. They apply the treatment only to the tumor cells, selectively stopping them from dividing by disrupting DNA replication only in ...

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by Luxorien
Sat Mar 03, 2012 7:03 pm
 
Forum: Microbiology
Topic: Nucleoside analogs and ionizing radiation
Replies: 1
Views: 1539

Nucleoside analogs and ionizing radiation

Nucleoside analogs and ionizing radiation are used in treating cancer. These mutagens can cause cancer, so why do you suppose they are used to threat the disease? Is it because it inserts new data to delete a certain part ...

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by Layd33foxx
Sat Mar 03, 2012 2:45 am
 
Forum: Microbiology
Topic: Nucleoside analogs and ionizing radiation
Replies: 1
Views: 1539

Re: What is the difference between chromatide and nucleotide?

The nucleotide is the single unit of DNA comprising the sugar molecule (deoxyribose) which is bonded to the base (A/T/C/G) (this combo is the nucleoside),plus the phosphate group (which bonds the C3 carbon atom of one sugar molecule to the C5 carbon molecule of the next one along in a phospodiester ...

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by Julie5
Wed Apr 27, 2011 6:55 pm
 
Forum: Cell Biology
Topic: What is the difference between chromatide and nucleotide?
Replies: 3
Views: 1881

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: 4465

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: 1731
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