pyrimidine base

简明释义

嘧啶碱基

英英释义

例句

1.In RNA, the pyrimidine bases are cytosine and uracil.

在RNA中，嘧啶碱基是胞嘧啶和尿嘧啶。

2.The structure of DNA includes four nucleobases, two of which are classified as pyrimidine bases.

DNA的结构包括四种核苷酸，其中两种被归类为嘧啶碱基。

3.Certain drugs target the metabolic pathways of pyrimidine bases to treat cancer.

某些药物针对嘧啶碱基的代谢途径来治疗癌症。

4.Researchers are studying how pyrimidine bases affect genetic mutations.

研究人员正在研究嘧啶碱基如何影响基因突变。

5.The synthesis of pyrimidine bases is crucial for nucleotide production.

合成嘧啶碱基对核苷酸的生产至关重要。

作文

In the realm of molecular biology, the term pyrimidine base refers to a category of nitrogenous bases that are fundamental components of nucleic acids. These bases include cytosine, thymine, and uracil, each playing a crucial role in the structure and function of DNA and RNA. Understanding the significance of pyrimidine bases is essential for comprehending how genetic information is stored, transmitted, and expressed in living organisms.The structure of pyrimidine bases is characterized by a single six-membered ring containing nitrogen atoms. This contrasts with purine bases, which have a two-ring structure. The simplicity of the pyrimidine base structure allows for their effective pairing with purine bases during the formation of nucleic acid structures. In DNA, thymine pairs with adenine, while in RNA, uracil takes the place of thymine and pairs with adenine as well.One of the most fascinating aspects of pyrimidine bases is their role in the genetic code. The sequence of these bases along a DNA strand encodes the information necessary for the synthesis of proteins, which are vital for cellular functions. For instance, the arrangement of pyrimidine bases can determine the characteristics of an organism, influencing everything from physical traits to susceptibility to diseases.Moreover, pyrimidine bases are also involved in various biochemical processes beyond genetic encoding. They participate in the regulation of cell growth and division, signaling pathways, and energy metabolism. For example, certain derivatives of pyrimidine bases are essential in the synthesis of coenzymes, which facilitate numerous enzymatic reactions within the cell.In recent years, research has delved deeper into the implications of pyrimidine bases in health and disease. Abnormalities in the metabolism of these bases can lead to various health issues, including cancer and genetic disorders. Thus, understanding the biochemistry of pyrimidine bases not only enhances our knowledge of molecular biology but also opens avenues for therapeutic interventions.In conclusion, pyrimidine bases are integral to the foundation of life as we know it. Their roles in the structure of nucleic acids, the encoding of genetic information, and involvement in cellular processes highlight their importance in biology. As research continues to uncover the complexities surrounding these bases, it becomes increasingly clear that they are not just mere components of DNA and RNA, but pivotal players in the intricate dance of life.

在分子生物学的领域中，术语嘧啶碱基指的是一类氮杂碱基，它们是核酸的基本组成部分。这些碱基包括胞嘧啶、胸腺嘧啶和尿嘧啶，每一种都在DNA和RNA的结构和功能中发挥着至关重要的作用。理解嘧啶碱基的重要性对于理解遗传信息如何在生物体内存储、传递和表达是必不可少的。嘧啶碱基的结构特点是包含氮原子的单个六元环。这与具有双环结构的嘌呤碱基形成对比。嘧啶碱基的简单结构使其在核酸结构形成过程中能够有效地与嘌呤碱基配对。在DNA中，胸腺嘧啶与腺嘌呤配对，而在RNA中，尿嘧啶取代胸腺嘧啶，与腺嘌呤配对。嘧啶碱基最引人入胜的方面之一是它们在遗传密码中的作用。这些碱基沿着DNA链的序列编码了合成蛋白质所需的信息，而蛋白质对细胞功能至关重要。例如，嘧啶碱基的排列可以决定有机体的特征，影响从身体特征到易感疾病等方方面面。此外，嘧啶碱基还参与超越遗传编码的各种生化过程。它们参与细胞生长和分裂的调节、信号通路和能量代谢。例如，某些嘧啶碱基的衍生物在辅酶的合成中是必不可少的，这些辅酶促进细胞内许多酶促反应。近年来，研究深入探讨了嘧啶碱基在健康和疾病中的影响。这些碱基的代谢异常可能导致各种健康问题，包括癌症和遗传疾病。因此，理解嘧啶碱基的生物化学不仅增强了我们对分子生物学的认识，还为治疗干预开辟了新的途径。总之，嘧啶碱基是我们所知生命基础的核心。它们在核酸结构、遗传信息编码和细胞过程中的作用突显了它们在生物学中的重要性。随着研究不断揭示围绕这些碱基的复杂性，越来越明显的是，它们不仅仅是DNA和RNA的组成部分，而是在生命的复杂舞蹈中扮演着关键角色。