uracil

1. Structure resembles uracil with an attached bromine group.: 带有溴基团的结构与尿嘧啶相似。

2. Uracil a nitrogenous base that is found in RNA but not in DNA.: 存在于rna而非dna中的一种含氮碱基。

3. Uracil -- a pyrimidine found in RNA that base-pares with adenine.: 尿嘧啶--核糖核酸中的一种嘧啶，与腺嘌呤形成碱基对。

4. What is the main way that uracil is created in DNA and why is the bad?: 在DNA中的尿嘧啶是通过那种主要途径形成的，这种改变会产生怎样的有害结果？

5. The structural and vibrational frequencies of Uracil in hydrated form is discussed.: 对水合尿嘧啶分子中，尿嘧啶分子的结构和振动频率的改变做了讨论。

6. TLC Scanning method for the detection and quality control of Uracil is established.: 建立了尿嘧啶的薄层扫描测定方法。

7. The most abundant bases are cytosine, thiamine, and uracil (pyrimidines) and adenine and guanine (purines).: 最丰富的碱基是胞嘧啶，胸腺嘧啶，尿嘧啶，腺嘌呤和鸟嘌呤。

8. A sample, quick, micro and accurate method for controlling the quality of Uracil in transformation is presented.: 为转化液中尿嘧啶含量控制提供了一个简便、迅速、微量、准确的方法。

9. The most abundant bases are cytosine, thiamine , and uracil ( pyrimidines ) and adenine and guanine ( purines ) .: 最丰富的碱基是胞嘧啶，胸腺嘧啶，尿嘧啶，腺嘌呤和鸟嘌呤。

10. The only difference is that in the RNA copy, thymine is replaced with the closely related base uracil, commonly abbreviated u.: 唯一的区别在于，在RNA复制中，胸腺嘧啶被密切联系的、常被缩写为U的碱基尿嘧啶替换。

11. Normal Raman and surface-enhanced Raman Scattering Spectroscopy of uracil and 5-halide uracils have been obtained and compared.: 文中对尿嘧啶及其5位卤代衍生物的常规和表面增强拉曼光谱进行了观察和比较。

12. He USES zeroes and ones to represent the very first chemical building blocks of life (most likely compounds based on adenine, thymine, guanine, cytosine or uracil).: 他用许多0和1来表示最早期时生命的化学成分(很可能是由腺嘌呤、胸腺嘧啶、鸟嘌呤、胞嘧啶和尿嘧啶组成的化合物)。

13. Animal experiments demonstrated that uracil and uridine were capabie of lowering the elevated serum aldolase level of mice suffering from experimental myotonia.: 动物实验证明，尿嘧啶和尿嘧啶核苷对实验性肌强直症小鼠血清醛缩酶有降低作用。

14. It relies upon the selective deamination of unmethylated cytosine to uracil after treatment with sodium bisulphite, usually followed by PCR amplification of the chosen target region.: 它依赖于用亚硫酸氢钠处理后，非甲基化的胞嘧啶选择性的去氨基为尿嘧啶，通常接着所选的靶向区域的PCR扩增。

15. The differences between the absorption of leucine and uracil by various parts of mid-gut of silkworm larva were studied, using trace method and culture in vitro technique. During in vitro.: 应用示踪法和体外培养技术，研究了桑蚕幼虫中肠各部位对亮氨酸和尿嘧啶吸收作用的差异。

16. DPD is the first rate-limiting enzyme in the catabolism of uracil and thymine, and affects DNA synthesis by decreasing the level of uracil and thymine, the necessary material for DNA synthesis.: DPD是尿嘧啶和胸腺嘧啶分解过程中的第一限速酶，可降低用于DNA合成的尿嘧啶和胸腺嘧啶的水平而影响DNA的合成。

17. DPD is the first rate-limiting enzyme in the catabolism of uracil and thymine, and affects DNA synthesis by decreasing the level of uracil and thymine, the necessary material for DNA synthesis.: DPD是尿嘧啶和胸腺嘧啶分解过程中的第一限速酶，可降低用于DNA合成的尿嘧啶和胸腺嘧啶的水平而影响DNA的合成。

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