cytosine


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Related to cytosine: cytidine

cy·to·sine

 (sī′tə-sēn′)
n. Abbr. C
A pyrimidine base, C4H5N3O, that is the constituent of DNA and RNA involved in base-pairing with guanine.

[cyt(o)- + (rib)os(e) + -ine.]

cytosine

(ˈsaɪtəsɪn)
n
(Biochemistry) a white crystalline pyrimidine occurring in nucleic acids; 6-amino-2-hydroxy pyrimidine. Formula: C4H5N3O. See also DNA, RNA

cy•to•sine

(ˈsaɪ təˌsin, -ˌzin, -sɪn)

n.
a pyrimidine base, C4H5N3O, that is one of the fundamental components of DNA and RNA, in which it forms a base pair with guanine. Symbol: C
[< German Cytosin (1894); see cyto-, -ose2, -ine2]

cy·to·sine

(sī′tə-sēn′)
A base that is a component of DNA and RNA, forming a base pair with guanine.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cytosine - a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
deoxyribonucleic acid, desoxyribonucleic acid, DNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"
ribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses"
pyrimidine - any of several basic compounds derived from pyrimidine
Translations
Cytosin
cytosine
cytozyna
References in periodicals archive ?
Yes, it's true; the four nitrogenous bases--adenine, guanine, thymine, and cytosine, which we learned as the inviolate structures at the basis of Watson-Crick pairing--aren't actually inviolate.
Toca 511 is a proprietary injectable RRV that encodes a prodrug activator enzyme, cytosine deaminase (CD).
5fC is one of these marks, and is formed when enzymes called TET enzymes add oxygen to methylated DNA -- a DNA molecule with smaller molecules of methyl attached to the cytosine base.
We know -- we see again -- that from the universal genetic alphabet of adenine, thymine, cytosine and guanine, endless variety has sprung and keeps springing.
Methylation of cytosine to 5-methylcytosine (5-mC) is a major epigenetic event which interferes with the binding of proteins to DNA resulting in the exquisite control of gene expression and cell differentiation.
Cytosine deaminase from the five Aspergillus species were preincubated at various temperature (30-90[degrees]C) before assay.
2] as 2-h iv infusion per 12 h Day of onset 1-2 weeks after chemotherapy * Usually during the initial course * Increased risk with multiple doses Pathophysiology Increased alveolar capillary permeability Diagnosis Exercise of exclusion * Heart dysfunction * Infections * Metabolic abnormalities * Cancer-related causes Common clinical Early onset of fever symptoms Dyspnea Hypoxemia Tachypnea Cough Radiological X-ray: Confluent alveolar consolidation findings HRCT: Alveolar or interstitial opacification in lower lobes surrounded by ground glass areas and/or pleural effusions Treatment Steroids: Response rate is 65%-80% Supportive care ARA-C: cytosine arabinoside; h: hour; HRCT: high resolution computed tomography; iv: intravenous
DNA methylation is the addition of a methyl group ( CH3) to cytosine.
The bisulfite treatment converts unmethylated cytosine to thymine in the template DNA so that the sequence of the amplicon will differ (C [right arrow] T) at all sites of methylation compared with the reference sequence from an untreated template.
Adsorption of fuanine, adenine, cytosine and thymine on glassy carbon or pyrolytic graphite electrodes has been investigated (34-36).
The RNA molecule is usually a single strand that folds into different shapes and consists of base units (adenine, guanine, cytosine, and uracil) bonded together with the sugar ribose.