Akademik

uracil

2,4-Dioxopyrimidine; a pyrimidine (base) present in ribonucleic acid.

- u. dehydrogenase an oxidoreductase catalyzing oxidation of u. to barbituric acid; also oxidizes thymine. SYN: u. oxidase.

- u. mustard an alkylating antineoplastic agent. SYN: uramustine.

- u. oxidase SYN: u. dehydrogenase.

- u. phosphoribosyltransferase phosphoribosyltransferase.

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ura·cil 'yu̇r-ə-.sil, -səl n a pyrimidine base C₄H₄N₂O₂ that is one of the four bases coding genetic information in the polynucleotide chain of RNA compare ADENINE, CYTOSINE, GUANINE, THYMINE

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one of the nitrogen-containing bases (see pyrimidine) occurring in the nucleic acid RNA.

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ura·cil (ūrґə-sil) a pyrimidine base, in animal cells usually occurring condensed with ribose to form the ribonucleoside uridine, a component of ribonucleic acid and of free nucleotides with functions in metabolism. The corresponding deoxyribonucleoside, deoxyuridine, is a component of free nucleotides involved in pyrimidine biosynthesis. See illustration of purine and pyrimidine bases, under base. Symbol U.

Medical dictionary. 2011.