V2EX monocistronic

Monocistronic

定义 Definition

monocistronic(单顺反子/单基因顺反子):指一种mRNA只包含一个编码区(一个cistron/一个蛋白质的编码信息),通常只翻译成一种蛋白质。常见于真核生物的mRNA;与之相对的是polycistronic(多顺反子),常见于许多原核生物操纵子产生的mRNA。

发音 Pronunciation

/mnosstrnk/

例句 Examples

Most human mRNAs are monocistronic.
大多数人类的mRNA是单顺反子的。

In eukaryotes, translation typically initiates at the 5′ end and produces a single protein from a monocistronic transcript, whereas many bacterial operons generate polycistronic mRNAs.
在真核生物中,翻译通常从5′端起始,并从单顺反子转录本产生一种蛋白质;而许多细菌操纵子会产生多顺反子mRNA。

词源 Etymology

mono-(“单一”)+ cistron(“顺反子”,早期遗传学中用于表示一个功能性遗传单位/一个蛋白质编码单位的术语)+ -ic(形容词后缀)构成。整体字面意思是“只含一个顺反子的”。

相关词 Related Words

文学与著作 Literary Works

  • Molecular Biology of the Cell(Alberts 等,细胞分子生物学教材中常在“基因表达/翻译”相关章节出现)
  • Molecular Biology of the Gene(Watson 等,讲解真核与原核mRNA结构差异时常使用该术语)
  • Lehninger Principles of Biochemistry(Nelson & Cox,生物化学教材中涉及转录与翻译机制时常出现)
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