guanine


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

guanine

 [gwah´nēn]
a purine base, one of the fundamental components of nucleic acids (DNA and RNA).

guan·ine (Gua, G),

(gwahn'ēn, -in),
2-Amino-6-oxypurine; one of the two major purines (the other being adenine) occurring in all nucleic acids.

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

(gwä′nēn′)
n. Abbr. G
A purine base, C5H5ON5, that is an essential constituent of both RNA and DNA.

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.

gua·nine

(G) (gwah'nēn)
One of the two major purines (the other being adenine) occurring in all nucleic acids.

guanine

One of the two purine bases of double-ring structure (the other being ADENINE) which, with the PYRIMIDINE bases form the ‘rungs of the ladder’, and the genetic code, in the double helix deoxyribonucleic acid (DNA) molecule. Guanine is also one of the ribonucleic acid (RNA) bases.
Guanineclick for a larger image
Fig. 183 Guanine . Molecular structure.

guanine (G)

one of four types of nitrogenous bases found in DNA, having the double-ring structure of a class known as PURINES. Guanine forms part of a DNA unit called a NUCLEOTIDE and always forms complementary pairs with a DNA pyrimidine base called CYTOSINE. Guanine also occurs in RNA molecules.

guanine

G; a purine base, one of the fundamental components of nucleic acids (DNA and RNA).
References in periodicals archive ?
MD: major depression; AA: homozygous wild type; AG: heterozygous type; GG: homozygous mutant type; A: adenine; G: guanine Table 2.
Evidence for the guanine N-7 chromium-phosphate chelate formation J.
SCE Polymeric film Guanine Adenine Thymine Cytosine Poly-2-aminophenol 0.
DNA adducts -- One of the most common oxidative damages to DNA coming from exposures to free radicals is the formation of (8-OH) guanine adducts.
4, the guanine groups in the target DNA serve as electrochemical signal moieties that provide a small current produced by the oxidation at ~1.
Our other clinical stage HCV candidates include PSI-7977, an unpartnered uracil nucleotide analog that is in two Phase 2b studies in patients with HCV genotypes 1, 2, or 3, and PSI-938, an unpartnered guanine nucleotide analog which recently completed a 14-day monotherapy study and has recently initiated a 14-day combination study with PSI-7977.
Usually, guanine binds to the nucleobase cytosine, but sometimes there are instances where four guanine bases can associate into a tetrad, or four-stranded structure.
But we may also be looking at fish scales, repackaged as guanine, whose changeable pigmentation is what causes the changing tones.
Utilizing isothermal titration calorimetry, the enthalpy of binding was measured and our results show a large enthalpy change (AH) in the binding of actinomycin D to the two sequences that only differ by the presence of one guanine.
red for adenine, blue for cytosine, green for guanine, and black for thymine.
Methylene blue unwinds DNA helices and, when photosensitized with white light, forms singlet oxygen species; these changes lead to single-strand breaks in DNA and oxidative alterations to guanine residues.

Full browser ?