uracil

简明释义

英[ˈjʊərəsɪl]美[ˈjʊrəsəl]

n. [生化] 尿嘧啶

英英释义

单词用法

同义词

反义词

例句

1.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。

2.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。

3.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。

4.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。

5.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。

6.Structure resembles uracil with an attached bromine group.

带有溴基团的结构与尿嘧啶相似。

7.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。

8.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。

9.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？

10.In RNA, uracil plays a crucial role by pairing with adenine during transcription.

在RNA中，尿嘧啶通过与腺嘌呤配对在转录过程中发挥重要作用。

11.The presence of uracil in the structure of RNA distinguishes it from DNA.

尿嘧啶在RNA结构中的存在使其与DNA区分开来。

12.Scientists often study uracil to understand its role in genetic coding.

科学家们经常研究尿嘧啶以理解其在遗传编码中的作用。

13.Mutations can occur if uracil is incorrectly incorporated into DNA.

如果尿嘧啶错误地被纳入DNA中，可能会发生突变。

14.In biochemistry, uracil is classified as a pyrimidine base.

在生物化学中，尿嘧啶被归类为一种嘧啶碱基。

作文

In the vast world of biochemistry, nucleotides play a crucial role as the building blocks of nucleic acids. Among the various nucleotides, one particularly interesting molecule is uracil, which is a pyrimidine base found in RNA. Unlike DNA, which contains thymine, RNA utilizes uracil to pair with adenine during the process of transcription. This substitution is significant as it reflects the evolutionary divergence between RNA and DNA. The presence of uracil in RNA contributes to its unique properties, including its ability to form a variety of secondary structures essential for the function of ribozymes and other RNA molecules. Understanding uracil is vital for grasping how genetic information is expressed within cells. When a gene is transcribed into messenger RNA (mRNA), uracil pairs with adenine, allowing the genetic code to be translated into proteins. This process is fundamental to all living organisms. Furthermore, uracil can undergo various modifications that enhance the stability and functionality of RNA. For example, certain enzymes can convert uracil into other forms, such as dihydrouracil, which plays a role in the structure and function of tRNA. In addition to its biological significance, uracil has implications in biotechnology and medicine. Researchers have explored the use of uracil derivatives in the development of antiviral drugs and cancer therapies. By targeting the pathways involving uracil, scientists aim to disrupt the replication of viruses or the growth of cancer cells. This highlights the importance of understanding uracil not just from a theoretical standpoint but also in practical applications that can impact human health. Moreover, the study of uracil extends beyond its biochemical roles. It serves as a reminder of the intricate connections between molecular biology and evolutionary processes. The transition from an RNA world, where uracil was prevalent, to the DNA-dominated world we see today illustrates the dynamic nature of life on Earth. As researchers continue to unravel the complexities of nucleic acids, uracil remains a focal point of interest, offering insights into the origins of life and the mechanisms of heredity. In conclusion, uracil is more than just a simple nucleotide; it is a key player in the realm of molecular biology. Its role in RNA structure and function, along with its potential applications in medicine, underscores the importance of this molecule. By studying uracil, we not only enhance our understanding of genetic expression but also open doors to innovative therapeutic strategies. As science progresses, the significance of uracil will undoubtedly continue to grow, revealing even more about the fundamental processes that govern life itself.

在生物化学的广阔世界中，核苷酸作为核酸的基本组成部分发挥着至关重要的作用。在各种核苷酸中，有一种特别有趣的分子是尿嘧啶，它是一种存在于RNA中的嘧啶碱基。与DNA含有胸腺嘧啶不同，RNA在转录过程中利用尿嘧啶与腺嘌呤配对。这种替代具有重要意义，因为它反映了RNA和DNA之间的进化分歧。尿嘧啶在RNA中的存在使其具有独特的特性，包括形成多种二级结构，这对于核酶和其他RNA分子的功能至关重要。 理解尿嘧啶对掌握细胞内遗传信息的表达至关重要。当基因被转录为信使RNA（mRNA）时，尿嘧啶与腺嘌呤配对，使遗传密码得以翻译成蛋白质。这个过程对所有生物体都是基础。此外，尿嘧啶可以经历各种修饰，以增强RNA的稳定性和功能性。例如，某些酶可以将尿嘧啶转化为其他形式，如二氢尿嘧啶，这在tRNA的结构和功能中发挥着作用。 除了其生物学意义外，尿嘧啶在生物技术和医学中也具有重要意义。研究人员探索了尿嘧啶衍生物在抗病毒药物和癌症治疗开发中的应用。通过靶向涉及尿嘧啶的途径，科学家们旨在破坏病毒的复制或癌细胞的生长。这突显了从理论角度理解尿嘧啶的重要性，以及在可能影响人类健康的实际应用。 此外，对尿嘧啶的研究超越了其生化角色。它提醒我们分子生物学与进化过程之间的复杂联系。从一个RNA世界（其中尿嘧啶占主导地位）到我们今天看到的以DNA为主导的世界的过渡，展示了地球上生命的动态本质。随着研究人员继续揭示核酸的复杂性，尿嘧啶仍然是一个关注的焦点，提供了关于生命起源和遗传机制的见解。 总之，尿嘧啶不仅仅是一个简单的核苷酸；它是分子生物学领域的关键参与者。它在RNA结构和功能中的作用，以及在医学中的潜在应用，突显了这种分子的重要性。通过研究尿嘧啶，我们不仅增强了对遗传表达的理解，还为创新的治疗策略打开了大门。随着科学的进步，尿嘧啶的重要性无疑将继续增长，揭示关于支配生命本身的基本过程的更多内容。