单词 | uracil |
例句 | The only difference in code between the gene’s original and the RNA copy was the substitution of the thymine to a uracil. The Gene 2016-06-02T00:00:00Z One loose end, Sasselov acknowledges, is that RAO has only been shown to lead to the synthesis of two of RNA’s four nucleotides, cytosine and uracil. ‘Breakthrough’ could explain why life molecules are left- or right-handed 2023-06-13T04:00:00Z However, they do not contain thymine, which is instead replaced by uracil, symbolized by a “U.” Concepts of Biology 2013-04-25T00:00:00Z RNA, short for ribonucleic acid, would not be possible without uracil. Asteroid discovery suggests ingredients for life on Earth came from space 2023-03-21T04:00:00Z Rather than inducing random changes in the virus’ RNA genome, the drug is more likely to cause specific nucleic acid substitutions, with guanine switching to adenine and cytosine to uracil. Could a popular COVID-19 antiviral supercharge the pandemic? 2023-02-01T05:00:00Z DNA contains deoxyribose and thymine, while RNA contains ribose and uracil. Biology for AP Courses 2022-06-09T00:00:00Z RNA uses the sugar ribose instead of deoxyribose, RNA generally is single stranded, and RNA contains uracil in place of thymine. Miller & Levine Biology 2018-01-01T00:00:00Z It also differs from DNA in that it contains the sugar ribose, rather than deoxyribose, and the nucleotide uracil rather than thymine. Concepts of Biology 2013-04-25T00:00:00Z The researchers extracted uracil, niacin and some other organic compounds in the Ryugu samples by soaking the material in hot water and then performing analyses called liquid chromatography and high-resolution mass spectrometry. Asteroid discovery suggests ingredients for life on Earth came from space 2023-03-21T04:00:00Z RNA contains ribose, one phosphate group, and one nitrogen-containing base, but the “choices” of base for RNA are adenine, cytosine, guanine, and uracil. Anatomy and Physiology 2013-06-19T00:00:00Z The study revealed that the company should not use the higher doses “because of intolerability, perhaps due to natural uracil?” he says. What went wrong with CureVac’s highly anticipated new mRNA vaccine for COVID-19? 2021-06-18T04:00:00Z Organic chemists have created in the lab the nucleobases, adenine, uracil, cytosine and guanine — known as A, U, C and G — that could have served as the building blocks of RNA on an early Earth. Daily briefing: At 15, graphene is ready for prime time 2019-10-06T04:00:00Z Those building blocks—cytosine, uracil, adenine, and guanine—have previously been re-created in the lab from other starting materials. Chemists find a recipe that may have jump-started life on Earth 2018-10-18T04:00:00Z They then treated the nuclei with a chemical that converts cytosines without methyl groups to the RNA base uracil. Method that Maps DNA Tags Reveals New Types of Neurons 2017-09-18T04:00:00Z Finally, instead of the base thymine, RNA contains the base uracil. Anatomy and Physiology 2013-06-19T00:00:00Z “I am uncertain what it was finally, natural uracil or only dose or both,” he says. What went wrong with CureVac’s highly anticipated new mRNA vaccine for COVID-19? 2021-06-18T04:00:00Z DNA is very similar to RNA, except that uracil is replaced with thymine. ‘RNA world’ inches closer to explaining origins of life 2016-05-12T04:00:00Z He and his team replaced most of the organism's T bases with chlorouracil, a form of the RNA base uracil in which a hydrogen atom is replaced with chlorine. Chemical biology: DNA's new alphabet 2012-11-21T18:21:07.117Z Because the genetic code was known to consist of triplets, the experiment showed that UUU is the codon for phenylalanine, U being the symbol for uracil. 2010-01-21T07:10:00Z This means that adenine will always pair up with uracil during the protein synthesis process. Anatomy and Physiology 2013-06-19T00:00:00Z The corresponding derivatives of guanine, cytosine, and uracil were also found, and they are active in the temporary transfer of phosphoric acid groups in biological processes. History of Phosphorus |
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