guanine

enUK

gua·nine

G0295700 (gwä′nēn′)n. Abbr. G A purine base, C₅H₅ON₅, that is an essential constituent of both RNA and DNA.

[From guano, in which it is found.]

guanine

(ˈɡwɑːniːn; ˈɡuːəˌniːn) n (Elements & Compounds) a white almost insoluble compound: one of the purine bases in nucleic acids. Formula: C5H5N5O[C19: from guano + -ine²]

gua•nine

(ˈgwɑ nin)

n. 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. [1845–55; guan (o) + -ine²]

gua·nine

(gwä′nēn′) A base that is a component of DNA and RNA, forming a base pair with cytosine.

Thesaurus

Noun

guanine - a purine base found in DNA and RNA; pairs with cytosineGpurine - any of several bases that are derivatives of purinedeoxyribonucleic 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"

Translations

guanine

enUK

guanine

(gwä`nēn), organic base of the purinepurine,
type of organic base found in the nucleotides and nucleic acids of plant and animal tissue. The German chemist Emil Fischer did much of the basic work on purines and introduced the term into the chemical literature in the early 20th cent.
..... Click the link for more information. family. It was reported (1846) to be in the guanoguano
, dried excrement of sea birds and bats found principally on the coastal islands of Peru, Africa, Chile, and the West Indies. It contains about 6% phosphorus, 9% nitrogen, 2% potassium, and moisture. Guano is found mixed with feathers and bones and is used as a fertilizer.
..... Click the link for more information. of birds; later (1879–84) it was established as one of the major constituents of nucleic acidsnucleic acid,
any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the storage and replication of hereditary information and in the expression of this information through protein synthesis.
..... Click the link for more information. . The accepted structure of the guanine molecule was proposed in 1875, and the compound was first synthesized in 1900. When combined with the sugar ribose in a glycosidic linkage, guanine forms a derivative called guanosine (a nucleoside), which in turn can be phosphorylated with from one to three phosphoric acid groups, yielding the three nucleotidesnucleotide
, organic substance that serves as a monomer in forming nucleic acids. Nucleotides consist of either a purine or a pyrimidine base, a ribose or deoxyribose, and a phosphate group. Adenosine triphosphate serves as the principle energy carrier for the cell's reactions.
..... Click the link for more information. GMP (guanosine monophosphate), GDP (guanosine diphosphate), and GTP (guanosine triphosphate). Analogous nucleosides and nucleotides are formed from guanine and deoxyribose. The nucleotide derivatives of guanine perform important functions in cellular metabolism. GTP acts as a coenzymecoenzyme
, any one of a group of relatively small organic molecules required for the catalytic function of certain enzymes. A coenzyme may either be attached by covalent bonds to a particular enzyme or exist freely in solution, but in either case it participates intimately in
..... Click the link for more information. in carbohydrate metabolism and in the biosynthesis of proteins; it can readily donate one of its phosphate groups to adenosine diphosphate (ADP) to form adenosine triphosphateadenosine triphosphate
(ATP) , organic compound composed of adenine, the sugar ribose, and three phosphate groups. ATP serves as the major energy source within the cell to drive a number of biological processes such as photosynthesis, muscle contraction, and the synthesis of
..... Click the link for more information. (ATP), an extremely important intermediate in the transfer of chemical energy in living systems. GTP is the source of the guanosine found in RNA and deoxyguanosine triphosphate (dGTP) is the source of the deoxyguanosine in DNA, and thus guanine is intimately involved in the preservation and transfer of genetic information. Guanine is said to account for the iridescence of fish scales and the white, shiny appearance of the skin of many amphibians and reptiles.

Guanine

2-amino-6-oxypurine. a purine base, widely distributed in animal and plant cells (it is a constituent of nucleic acids and is present in a free state).

It is the main component of the excrements of spiders and birds and was discovered in guano (hence the name). A considerable amount of guanine is present in the scales and skin of fish, reptiles, and amphibians. The calcium compound of guanine gives fish scales their characteristic shine. In mammal organisms, guanine is transformed into xanthine under the action of the enzyme guanase.

guanine

[′gwän‚ēn] (biochemistry) C₅H₅ON₅ A purine base; occurs naturally as a fundamental component of nucleic acids.

guanine

gua·nine

guanine

gua•nine

gua·nine

guanine

guanine

Guanine

guanine

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guan·ine (Gua, G),

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gua·nine

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guanine (G)

guanine

Synonyms for guanine

noun a purine base found in DNA and RNA

Synonyms

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