“uracil”的英文意思_释义_用法

单词

uracil

释义

uracil Biochem.|ˈjʊərəsɪl|
[a. G. uracil (R. Behrend 1885, in Ann. d. Chemie CCXXIX. 11), of unknown origin (perh. f. Eng. urea + G. ac-etsäure acetic acid + -il).]
A pyrimidine base, C₄H₄N₂O₂, which is a constituent of RNA.
1890Roscoe & Schorlemmer Treat. Chem. (ed. 2) III. 387 Behrend has succeeded in preparing..compounds, which are derivatives of a hypothetical substance, to which he has given the name uracil.1907Jrnl. Biol. Chem. III. 187 The uracil dissolved completely on warming.1944[see orotic a.].1959Times 12 June 15/7 It has been calculated..that a thousand-unit polynucleotide chain consisting of a coded repeat of only four different components—adenine, guanine, cytosine, and uracil—in the same ratio as exists in tobacco mosaic virus nucleic acid could form about 10⁵⁷ different arrangements.1975Sci. Amer. May 25/2 Poliovirus RNA is a single chain of about 7,500..nucleotides, each of which consists of a ribose sugar component and one of four organic bases: adenine, uracil, guanine and cytosine.

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