嘧啶

Pyrimidines are essential components of nucleic acids, such as DNA and RNA.
嘧啶是核酸（如DNA和RNA）的基本组成部分。
Purine synthesis begins with the condensation of two pyrimidine precursors.
嘌呤的合成始于两个嘧啶前体的缩合。
The structure of cytosine, a pyrimidine base, is crucial for its role in DNA replication.
胞嘧啶，作为一种嘧啶碱基，其结构对于DNA复制至关重要。
Pyrimidines play a vital part in the formation of codons, which code for specific amino acids.
嘧啶在密码子形成中起关键作用，密码子编码特定的氨基酸。
In biochemistry, pyrimidines are involved in various metabolic pathways, like the breakdown of urea.
在生物化学中，嘧啶参与多种代谢途径，如尿素的分解。
A deficiency of pyrimidines can lead to conditions like thymineuria or pyrimidine kinase deficiency.
嘧啶缺乏可能导致如胸苷尿症或嘧啶激酶缺陷等疾病。
The nitrogenous bases in DNA, adenine and thymine, are both pyrimidines.
DNA中的氮碱基腺嘌呤和胸腺嘧啶都是嘧啶。
Pyrimidines have a double ring structure, differentiating them from the purine family.
嘧啶具有双环结构，这使它们与嘌呤家族区分开来。
The synthesis of pyrimidines requires the enzyme pyrimidine synthase.
嘧啶的合成需要嘧啶合成酶的作用。
During DNA replication, pyrimidine nucleotides pair with purine nucleotides to form complementary strands.
在DNA复制过程中，嘧啶核苷酸与嘌呤核苷酸配对形成互补链。