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 ?
Due to the lack of computational resources to predict structures on large intronic sequences, the cytosine sites that do not locate on the exons of known transcripts or the mitochondrial chromosome are filtered.
Besides enabling higher order formation, this G/C-rich region close to the TSS contains CpG sequences favorable for cytosine hydroxymethylation.
The cytosine and total nucleic acid bases concentrations were not influenced by the time of sampling in rumen.
Till now, the insertion of a single cytosine in a coding variable number tandem repeat (VNTR) region of the MUC1 gene, a rare type of mutation, is the only reported causative mutation of MCKD1.[8] This single insertion creates an eight-base stretch of cytosine instead of a seven-base stretch harboring in a coding VNTR region, and thus creates extreme difficulty for genetic testing.
As cytosine is deaminated in formalin-fixed tissues (13, 14), it is likely that 5-mC undergoes corresponding deamination to thymine.
In our case, the receptor affinity of [T.sub.3] was reduced to 17% as a result of alanine substitution of proline amino acid due to guanine transversion instead of cytosine in codon 453 at exon 10.
Results: Cytosine-cytosine and cytosin-thymine genotype frequencies of the TLR2 R753Q single nucleotide polymorphism in the atopic dermatitis group were determined as being 98.6% and 1.4%, cytosine allele frequency for TLR2 R753Q single nucleotide polymorphism was determined as 99.29% and the thymine allele frequency was 0.71%, thymine-thymine, thymine-adenine, and adenine-adenine genotype frequencies of the TLR2 A-16934T single nucleotide polymorphism were 24.3%, 44.3%, and 31.4%.
There's also a difference in that, while the bases adenine, guanine, and cytosine are common to both RNA and DNA, the DNA base thymine is substituted by uracil in RNA.
Because of the potential impact of both hypo- and hypermethylation of cytosine on health and disease, there is an increasing need for techniques that are able to easily detect and measure DNA methylation.
The destruction process of dental support tissues is explained by the activation of the innate cells (neutrophils and macrophages) by the use of the TLRs, mainly the TLR4, to recognize the LPS of predominant gram-negative anaerobic microorganisms in the subgingival plaque and is going to promote the transcription of inflammatory cytosine via NF-kB.
An analytical method has been proposed for the separation and determination of guanine, adenine, cytosine, thymine and uracil by gas chromatography (GC) following precolumn derivatization using ethyl chloroformate.