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单词 uracil
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Examples ofuracil

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Uracilis chemically very similar to thymine, the latter being 5-methyluracil.
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The first reaction is the simplest of the syntheses, by adding water to cytosine to produceuraciland ammonia.
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Some examples include hypoxanthine, dihydrouracil, methylated forms ofuracil, cytosine, and guanine, as well as modified nucleoside pseudouridine.
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When base pairing with adenine,uracilacts as both a hydrogen bond acceptor and a hydrogen bond donor.
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The nucleotide bases are made up of purines (adenine and guanine) and pyrimidines (cytosine and thymine oruracil).
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Values are the percentage inhibition ofuracilincorporation for each serum dilution compared with the same dilution of normal mouse serum.
From theCambridge English Corpus
Purines and pyrimidines, including adenine, guanine, cytosine, thymine anduracil, play a major role in terrestrial biochemistry.
From theCambridge English Corpus
Selection is foruracilprototrophy.
From theCambridge English Corpus
With widely diffused minerals and metal oxides as catalysts, formamide affords all the precursor nucleic bases: purine, adenine, hypoxanthine (bioisomer of guanine), cytosine,uraciland thymine.
From theCambridge English Corpus
Backbone compression favors eversion of the now extrahelical nucleotide, which is positioned for recognition by theuracil-binding motif.
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Analysis of codon use found 39.5%uraciland 26.8% adenosine in the third base position.
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Chemically it is a derivative of nitrogen mustard anduracil.
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The first site of ionization ofuracilis not known.
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It is a component of the combination drug tegafur/uracil.
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The product contains unconverted cytosine where they were previously methylated, but cytosine converted touracilif they were previously unmethylated.
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The most common nitrogenous bases are adenine, cytosine, guanine, thymine, anduracil.
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Methylated cytosine residues are unchanged by the treatment, whereas unmethylated ones are changed touracil.
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During the period 1885 to 1901, he was able to isolate and name its five constituent organic compounds: adenine, cytosine, guanine, thymine, anduracil.
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Adenine and guanine are purines, cytosine anduracilare pyrimidines.
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The presence of nitrous acid can cause transition mutations, by converting cytosine touracil.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2024/12/27 4:26:51