单词 | hydroxymethylcytosine |
释义 | > as lemmashydroxymethylcytosine hydroxymethylcytosine n. Brit. /hʌɪˌdrɒksɪmiːθʌɪlˈsʌɪtə(ʊ)siːn/ , /hʌɪˌdrɒksɪmɛθʌɪlˈsʌɪtə(ʊ)siːn/ , /hʌɪˌdrɒksɪmɛθ(ᵻ)lˈsʌɪtə(ʊ)siːn/ , U.S. /haɪˌdrɑksiˌmɛθ(ə)lˈsaɪdəˌsin/ a pyrimidine base, C4H4N3O·CH2OH, that is present in place of cytosine in the DNA of certain bacteriophages.ΚΠ 1952 Wyatt & Cohen in Nature 20 Dec. 1072/1 We have now resolved this discrepancy by isolation from T-even bacteriophages of a new pyrimidine base, identified as 5-hydroxymethylcytosine. 1968 H. V. Aposhian in H. Fraenkel-Conrat Molecular Basis Virol. v. 499 The unusual base, 5-hydroxymethylcytosine, is not found in uninfected E. coli. < as lemmas |
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