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After German Cytosin, equivalent to Ancient Greek κύτος (kútos) + -ine. Cytosine was discovered and named by the German biochemists Albrecht Kossel and Albert Neumann in 1894 when it was hydrolyzed from calf thymus tissues.
cytosine (plural cytosines)
- (biochemistry) A heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
- 1997, Ian McEwan, Enduring Love, Vintage (1998), page 164:
- Then he found them, the substances that made up the four-letter alphabet in whose language all life is written — adenine and cytosine, guanine and thymine.
- Hypernyms: nucleobase, pyrimidine
- Coordinate terms: adenine, guanine, thymine, uracil
heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA