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: Why is ATP rather than GTP, CTP or TTP the energy currency?

... for the ` selective evolutionary force` for error free protein synthesis ( almost all of them CTP-GTP-TTP and ATP have same Bond energy . All nucleoside triphosphates have ΔG°' values close to -31 kJ/mol ) thermodynamically . Slow speed and accuracy for error check is utmost important in `Structural ...

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by metingun2
Sun Oct 06, 2013 11:53 am
 
Forum: Molecular Biology
Topic: Why is ATP rather than GTP, CTP or TTP the energy currency?
Replies: 5
Views: 5584

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: 4335

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: 4335

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: 2610

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: 5721
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