uracil
IPA: jɝæsʌɫ
noun
- (organic chemistry) One of the bases of RNA, pairing with adenine.
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Examples of "uracil" in Sentences
- Hence, it is more efficient to quickly synthesize uracil and quickly synthesize labile RNAs.
- Uracil is cheaper to synthesize than thymine, because thymine has a methyl group that uracil lacks.
- For example, suppose one wishes to explain why DNA has thymine and why messenger RNA, transfer RNA, and ribosomal RNA have uracil.
- Carbon isotope ratios for uracil and xanthine of δ13C = + 44.5‰ and + 37.7‰, respectively, indicate a non-terrestrial origin for these compounds.
- Adenine and guanine are fused five - and six-membered purines, while cytosine and thymine are six-membered rings called uracil (U), replaces thymine in RNA.
- Of the many difficulties encountered by those in the field, the most frustrating has been the failure to find any way of properly joining the pyrimidine nucleobases — cytosine and uracil — to ribose (Fig. 1a).
- The interface properties of the protein-RNA complexes reveal the diverse nature of the binding sites. van der Waals contacts played a more prevalent role than hydrogen bond contacts, and preferential binding to guanine and uracil was observed.
- A number of different sensors have been developed, based on triggers that include direct DNA damage, the inactivation of bacterial spores and bacteriophages, photochemical reactions involving vitamin D photosynthesis, and the accumulation of polycrystalline uracil.
- For 40 years, efforts to understand the prebiotic synthesis of the ribonucleotide building blocks of RNA have been based on the assumption that they must have assembled from their three molecular components: a nucleobase (which can be adenine, guanine, cytosine or uracil), a ribose sugar and phosphate.
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