V2EX nucleobase

Nucleobase

释义 Definition

核碱基:核酸(DNA 或 RNA)中的含氮碱性成分,是构成核苷酸并参与碱基配对的关键部分。常见的核碱基包括 A(腺嘌呤)、G(鸟嘌呤)、C(胞嘧啶)、T(胸腺嘧啶,DNA 中)、U(尿嘧啶,RNA 中)

发音 Pronunciation (IPA)

/nuklibes/

例句 Examples

A nucleobase is one component of a nucleotide.
核碱基是核苷酸的组成部分之一。

Mutations can occur when a nucleobase is substituted during DNA replication, potentially altering how genes are expressed.
在 DNA 复制过程中,如果核碱基发生替换就可能产生突变,从而改变基因的表达方式。

词源 Etymology

nucleobase 由 **nucleo-**(与“细胞核/核酸”有关,源自 nucleus “细胞核”)+ base(“碱”,指化学上的碱性物质)构成,字面意思是“核中的碱(性成分)”。该词常用于生物化学与分子生物学语境,用来强调其在核酸结构中的“碱基”角色。

相关词 Related Words

文学与作品 Literary Works

  • Molecular Biology of the Gene(Watson 等):在讲解 DNA/RNA 结构与复制机制时常使用 nucleobase 及相关术语。
  • Lehninger Principles of Biochemistry(Nelson & Cox):在核酸化学章节中讨论核苷酸组成与碱基配对时出现该词。
  • Molecular Cell Biology(Lodish 等):在遗传信息存储、复制与转录部分使用 nucleobase 来描述核酸的基本化学单位。
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