n.
A white crystalline nucleoside, C9H13N3O5, composed of one molecule each of cytosine and ribose.
cytidine
Dictionary:
cy·ti·dine (sī'tĭ-dēn')  |
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| Chemistry Dictionary: cytidine |
A nucleoside comprising one cytosine molecule linked to a D-ribose sugar molecule. The derived nucleotides, cytidine mono-, di-, and triphosphate (CMP, CDP, and CTP respectively) participate in various biochemical reactions, notably in phospholipid synthesis.
Cytidine
| Veterinary Dictionary: cytidine |
A nucleoside, cytosine riboside; a constituent of RNA and cytidine nucleotides.
- c. 5′-triphosphate — CTP; pyrimidine-nucleotide base involved in the structure of the nucleic acids, DNA and RNA, in the activation of sugars, and in phospholipid synthesis.
| Wikipedia: Cytidine |
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| CAS number | [] |
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| Molecular formula | C9H13N3O5 |
| Molar mass | 243.22 g mol−1 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
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Cytidine is a nucleoside molecule that is formed when cytosine is attached to a ribose ring (also known as a ribofuranose) via a β-N1-glycosidic bond. Cytidine is a component of RNA.
If cytosine is attached to a deoxyribose ring, it is known as a deoxycytidine.
Dietary sources of cytidine
Dietary sources of cytidine include foods with high RNA (ribonucleic acid) content,[1] such as organ meats, Brewer's yeast, as well as pyrimide-rich foods such as beer. During digestion, RNA-rich foods are broken-down into ribosyl pyrimidines (cytidine and uridine), which are absorbed intact.[1] In humans, dietary cytidine is converted into uridine, [2] which is probably the compound behind cytidine's metabolic effects.
References
- ^ a b Jonas DA, Elmadfa I, Engel KH, et al. (2001). "Safety considerations of DNA in food". Ann Nutr Metab. 45 (6): 235–54. PMID 11786646. http://content.karger.com/produktedb/produkte.asp?typ=fulltext&file=anm45235.
- ^ Wurtman RJ, Regan M, Ulus I, Yu L (Oct 2000). "Effect of oral CDP-choline on plasma choline and uridine levels in humans". Biochem Pharmacol. 60 (7): 989–92. PMID 10974208. http://linkinghub.elsevier.com/retrieve/pii/S0006-2952(00)00436-6.
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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