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uracil

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
u·ra·cil  (yr-sl)
n. Abbr. U
A pyrimidine base, C4H4N2O2, that is an essential constituent of RNA.

[ur(ea) + ac(etic) + -il, substance relating to.]

uracil [ˈjʊərəsɪl]
n
(Life Sciences & Allied Applications / Biochemistry) Biochem a pyrimidine present in all living cells, usually in a combined form, as in RNA. Formula: C4H4N2O2
[from uro-1 + acetic + -ile]

uracil  (yr-sl)
A pyrimidine base that is a component of RNA. It forms a base pair with adenine during transcription. Uracil is therefore structurally analogous to thymine in molecules of DNA. Chemical formula: C4H4N2O2.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.uracil - a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
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"
nucleotide, base - a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)


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Only one of the four "nucleobases" that make up RNA and DNA is different between the two: uracil is present in RNA while thymine takes its place in DNA.
Better but not pricier Although proprietary, patented OBS chemistry is based on uracil, which is naturally present in the human body as one of the four building blocks of RNA nucleic acids.
This deamination process is normally counteracted by uracil-N-glycosylase, the product of the ung gene, and organisms defective in the removal of uracil from DNA have an increased spontaneous mutation rate and more G:C right arrow] A:T base-pair transitions (7).
 
 
 
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