guanine


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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 ?
The substitution of adenine with guanine at the extracellular amino-terminal 145 results in a change of serine to glycine in the 49th codon.
2008) and Blocks (Henikoff & Henikoff, 1994) databases was done with the following G domain primary structures as queries: (c-Ha-ras1 (HRas precursor, P01112), Guanine nucleotide-binding protein [G.
The observed spectral changes are attributed to curcumin interaction (indirectly through H-bonding) with the guanine N-7 atoms and to a lesser extent with thymine O-2 atoms that are not normally involved in Watson-Crick hydrogen bonding network.
Simply stated we connect the two heterocyclic bases of DNA specifically at the O6 atoms of two guanines with an alkyl linker using a procedure known as the Mitsunobu reaction.
SCEM Guanine Adenine Acetate Phosphate Acetate Phosphate Polymeric film buffer buffer buffer buffer Poly-2-aminophenol 0.
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.
1), but at least one coil can be observed interiorly, as a distortion beneath the abdominal integument, which is devoid of white guanine pigmentation.
The incorporation of pyrazolopyrimidine bases into nucleic acid probes and primers in place of the normal guanine (G) base allows the development of diagnostic assay reagents that can target sequences intractable to normal probes and primers.
Furthermore, an in vivo study showed significant health benefit for 14 subjects treated for 4 weeks with the unique C-Med-100/mushroom extract formulation in that they had reduced pain, reduced fatigue, weight loss and a reduced presence of DNA damage in peripheral blood assessed by (8-OH) guanine DNA adducts and elevation in serum protein thiols.
This technique uses a mediatoramplified guanine oxidation mechanism based on the use of the inherent guanine bases in target DNA molecules as the signal moieties.
The rosette-shape rings and nanotubes are composed of guanine and cytosine, two of the molecules that are basic components of genes.

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