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guanine |
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guanine /gua·nine/ (gwah´nēn) a purine base, in animal and plant cells usually occurring condensed with ribose or deoxyribose to form guanosine and deoxyguanosine, constituents of nucleic acids. Symbol G.
guanine [gwan′ēn] a purine base that is a component of DNA and RNA. In free or uncombined form it occurs in trace amounts in most cells, usually as a product of the enzymatic hydrolysis of nucleic acids and nucleotides. On hydrolysis it is first converted into xanthine and finally into uric acid. See also adenine. guanine G; a purine base, one of the fundamental components of nucleic acids (DNA and RNA). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| A substitution of cytosine for guanine, also located in VD 1, resulted in Gln instead of Glu at amino acid position 117, as found in genotype B and strain 6BC (numbering according to the ompA amino acid sequence of the C. Adenine (A) binds with thymine (T), and guanine (G) pairs with cytosine (C). Table 1 DNA stoichiometry (18) sums over adenine (A) and thymine (T) as well as cytosine (C) and guanine (G) are given because these molecules are paired. |
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