guanine

gua·nine (gwä′nēn′, -nin)

noun

a crystalline purine base, CHNO, contained in the nucleic acids of all tissue: it links with cytosine in the DNA structure

Etymology: < guano (a commercial source of the base) + -ine

Modifies a noun

nucleotide: The enzyme is modulated by adenine and guanine nucleotides, although it is difficult to make much sense of the observed effects.
exchange: Ras associates with SOS, a guanine exchange factor, and exchanges GDP for GTP.
factor: Ras associates with SOS, a guanine exchange factor, and exchanges GDP for GTP.
base: There was no evidence of oxygen free radicals damaging the guanine bases in either gene.
nucleotide-binding: Professor Graeme Milligan Studies of signal transduction mediated by guanine nucleotide-binding proteins.
amine: A guanine amine at this same position would push the drug away; hence its AT specificity.

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