C (cytosine)

C (cytosine)
C stands for cytosine, a DNA nucleotide that which is one member of the base pair in DNA consisting of guanine and cytosine. This base pair is conventionally abbreviated G-C (or GC). The other base pair in DNA is adenine and thymine which is conventionally abbreviated A-T (or AT). Each base pair forms a "rung of the DNA ladder." A DNA nucleotide is made of a molecule of sugar, a molecule of phosphoric acid, and a molecule called a base. The bases are the "letters" that spell out the genetic code. In DNA, the code letters are A, T, G, and C, which stand for the chemicals adenine, thymine, guanine, and cytosine, respectively. In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Cytosine — Cytosine …   Wikipedia

  • Cytosine — Structure de la 1H Cytosine Général …   Wikipédia en Français

  • Cytosine deaminase — Identifiers EC number 3.5.4.1 CAS number 9025 05 2 …   Wikipedia

  • cytosine — [ sitozin ] n. f. • 1903; de cyto et ine ♦ Biochim. Base pyrimidique présente dans l A. D. N. et dans l A. R. N. ● cytosine nom féminin Composé basique dérivé de la pyrimidine et constituant essentiel des acides nucléiques. (Elle est… …   Encyclopédie Universelle

  • cytosine — 1894, from Ger. cytosin (1894), from CYTO (Cf. cyto ) cell + ose + chemical suffix INE (Cf. ine) (2). The name cytosine (due to Kossel and Neumann) is misleading. Cytosine is not, like adenosine and guanosine, a nucleoside but the sugar free base …   Etymology dictionary

  • cytosine — cy to*sine (s[imac] t[ o]*s[i^]n or s[imac] t[ o]*s[=e]n), n. (Biochemistry) A pyrimidine ({C4H5N3O}) which is one of the four major basic components of DNA and RNA in most organisms, forming glyosides with ribose and deoxyribose. It is the basic …   The Collaborative International Dictionary of English

  • cytosine arabinoside — n a cytotoxic antineoplastic agent C9H13N3O5 that is a synthetic isomer of the naturally occurring nucleoside of cytosine and arabinose and is used esp. in the treatment of acute myelogenous leukemia in adults * * * cytarabine …   Medical dictionary

  • cytosine — cytosine. См. цитозин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • cytosine deoxyribose — cytosine deoxyribose. См. дезоксицитозин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • cytosine-arabinoside — ● cytosine arabinoside nom féminin Antimétabolite de synthèse employé dans le traitement de la leucémie aiguë …   Encyclopédie Universelle

  • cytosine — [sīt′ō sēn΄] n. [Ger zytosin < zyt , CYTO + os, OSE2 + in, INE3] a pyrimidine base, C4H5N3O, contained in the nucleic acids of all tissue: it links with guanine in the DNA structure …   English World dictionary

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