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n. Abbr. G
A purine base, C5H5ON5, that is an essential constituent of both RNA and DNA.
[From guano, in which it is found.]
(Elements & Compounds) a white almost insoluble compound: one of the purine bases in nucleic acids. Formula: C5H5N5O
[C19: from guano + -ine2]
a purine base, C5H5N5O, that is a fundamental constituent of DNA and RNA, in which it forms base pairs with cytosine. Symbol: G Compare guanosine.
A base that is a component of DNA and RNA, forming a base pair with cytosine.
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|Noun||1.||guanine - a purine base found in DNA and RNA; pairs with cytosine|
purine - any of several bases that are derivatives of purine
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"