uraciln.

Brit.

/ˈjʊərəsɪl/,

/ˈjɔːrəsɪl/, U.S.

/ˈjʊrəˌsɪl/

Etymology: < German uracil (R. Behrend 1885, in Ann. d. Chemie CCXXIX. 11), of unknown origin (perhaps < English ur- (in urea n.) + German ac-etsäure acetic acid + -il).

Biochemistry.

A pyrimidine base, C₄H₄N₂O₂, which is a constituent of RNA.

ΚΠ

1890 H. E. Roscoe & C. 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.

1907 Jrnl. Biol. Chem. 3 187 The uracil dissolved completely on warming.

1944 Nature 26 Feb. 251/2 Four out of five of the strains of Group C streptococci of various types which were tested also needed uracil or orotic acid for optimal growth.

1959 Times 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.

1975 Sci. 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.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2021).

单词	uracil
释义	uraciln. Brit. /ˈjʊərəsɪl/, /ˈjɔːrəsɪl/, U.S. /ˈjʊrəˌsɪl/ Etymology: < German uracil (R. Behrend 1885, in Ann. d. Chemie CCXXIX. 11), of unknown origin (perhaps < English ur- (in urea n.) + German ac-etsäure acetic acid + -il). Biochemistry. A pyrimidine base, C₄H₄N₂O₂, which is a constituent of RNA. ΚΠ 1890 H. E. Roscoe & C. 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. 1907 Jrnl. Biol. Chem. 3 187 The uracil dissolved completely on warming. 1944 Nature 26 Feb. 251/2 Four out of five of the strains of Group C streptococci of various types which were tested also needed uracil or orotic acid for optimal growth. 1959 Times 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. 1975 Sci. 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. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2021). < n.1890
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