Cytosine
Cytosine - Wikipedia, the free encyclopedia
Cytosine recently found use in quantum computation. ... Prebiotic cytosine synthesis: a critical analysis and implications for the origin of life" ...
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cytosine: Definition from Answers.com
cytosine ( ) n. ( Abbr. C ) A pyrimidine base, C 4 H 5 N 3 O, that is the constituent of DNA and RNA involved in base pairing with guanine
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genome.gov | Talking Glossary: "cytosine"
Easy-to-use, talking glossary of genetic terms, produced by the National Human Genome Research Institute. ... that make up the letters ATGC, cytosine is the "C" ...
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Origin of life: instability of building blocks
... RNA/DNA base cytosine is not produced in ... So prebiotic' productions of cytosine have always been indirect, and involve the ... Some cytosine is produced. ...
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Cytosine - New World Encyclopedia
Prebiotic cytosine synthesis: A critical analysis and implications for the ... Nucleobases: Adenine - Thymine - Uracil - Guanine - Cytosine - Purine - Pyrimidine ...
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cytosine -- Britannica Online Encyclopedia
Britannica online encyclopedia article on cytosine: a nitrogenous base derived from pyrimidine that occurs in nucleic acids, the heredity-controlling components of ...
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The Individualist: Cytosine
Cytosine is one of the 5 main nucleobases used in storing and transporting ... It uses material from the Wikipedia article "Cytosine" ...
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Evolution's Design
Yet the incorporation of cytosine works against such efforts, given its ... That is, given the emphasis on error correction, why would an engineer include cytosine? ...
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CYTOSINE
CYTOSINE - the difference between chicken and human cytosine ... CHEMISTRY SCHOOL. C4H5N3O1. 6[C4H5N3O1] 18.NTR:+24.CBN:+6.OCS:+30
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Cytosine deaminase - Wikipedia, the free encyclopedia
In enzymology, a cytosine deaminase (EC 3.5.4.1) is an enzyme that catalyzes the ... EGO entry for GO code 0004131: cytosine deaminase ...
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{{Chembox new|ImageFile=Cytosine_chemical_structure.png|ImageSize=120px|IUPACName=4-amino-3H-pyrimidin-2-one|OtherNames=|Section1= {{Chembox Identifiers| CASNo=71-30-7| PubChem=597| SMILES=C1=C(NC(=O)N=C1)N| MeSHName=Cytosine --> |Section2= {{Chembox Properties| Formula=C4H5N3O| MolarMass=111.102| Appearance=| Density=| MeltingPt=320 - 325°C (decomp)| BoilingPt=| Solubility= --> |Section3= {{Chembox Hazards| MainHazards=| FlashPt=| Autoignition= --> -->
Cytosine is one of the five main nucleobases found in the nucleic acids DNA and RNA. It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a Ketone group at position 2). The nucleoside of cytosine is cytidine. In Watson-Crick base pairing, it forms three hydrogen bonds with guanine. History Cytosine was discovered by Albrecht Kossel in 1894 when it was hydrolysed from calf thymus tissues.Kossel, A.; Steudel, H. Z. Physiol. Chem. 1903, 38, 49 A structure was proposed in 1903, and was synthesized (and thus confirmed) in the laboratory in the same year.
Cytosine recently found use in quantum computation. The first time anyquantum mechanical properties were harnessed to process informationtook place on August 1st in 1998 when researchers at Oxford implemented David Deutsch algorithm on a two qubit NMRQC (Nuclear Magnetic Resonance Quantum Computer) based on the cytosine molecule.
Chemical reactions Cytosine can be found as part of DNA, RNA, or as a part of a nucleotide. As cytidine triphosphate (CTP), it can act as a co-factor to enzymes, and can transfer a phosphate to convert adenosine diphosphate (ADP) to adenosine triphosphate (ATP).
In DNA and RNA, cytosine is paired with guanine. However, it is inherently unstable, and can change into uracil (deamination). This can lead to a point mutation if not repaired by the DNA repair enzymes such as uracil glycosylase, which cleaves a uracil in DNA.
Cytosine can also be methylated into 5-methylcytosine by an enzyme called DNA methyltransferase.
References External links
- Computational Chemistry Wiki
Cytosine - Wikipedia, the free encyclopedia
Cytosine is one of the five main bases found in DNA and RNA. It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at ...
Definition: cytosine from Online Medical Dictionary
The Online Medical Dictionary is a searchable dictionary of definitions from medicine, science and technology.
genome.gov | Talking Glossary: "cytosine"
Easy-to-use, talking glossary of genetic terms, produced by the National Human Genome Research Institute.
cytosine - Hutchinson encyclopedia article about cytosine
C. In physics, symbol for coulomb, the SI unit of electrical charge. C. In music, the keynote, or tonic, of the scale of C major.?
cytosine - definition of cytosine in the Medical dictionary - by the ...
cytosine /cy·to·sine/ (si´to-sen) a pyrimidine base occurring in animal and plant cells, usually condensed with ribose or deoxyribose to form the nucleosides cytidine and ...
SCOP: Protein: Cytosine deaminase from Escherichia coli
Protein: Cytosine deaminase from Escherichia coli Lineage: Root: scop; Class: All beta proteins [48724] Fold: Composite domain of metallo-dependent hydrolases [51337]
SCOP: Family: Cytosine deaminase
Family: Cytosine deaminase Lineage: Root: scop; Class: All beta proteins [48724] Fold: Composite domain of metallo-dependent hydrolases [51337] pseudobarrel; mixed sheet of 7 ...
cytosine - definition of cytosine by the Free Online Dictionary ...
n. Abbr. C. A pyrimidine base, C 4 H 5 N 3 O, that is the constituent of DNA and RNA involved in base pairing with guanine.
Curtis DNA Models: Thymine-Adenine, Cytosine-Guanine
Alternative DNS Base pairs deriving from New Scientist article ... For further details, see New Scientist, May 16, 1998. To view these models, install either (a) the Chime or (b ...
cytosine
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