V2EX polypeptide

Polypeptide

定义 Definition

polypeptide(多肽):由许多氨基酸通过肽键连接形成的链状分子,是蛋白质的基本组成单位之一;较长或经折叠/修饰后可构成具有功能的蛋白质。(该词在生物化学语境中最常用;在其他领域较少见。)

发音 Pronunciation (IPA)

/pl.ipp.tad/(英)
/p.lipp.tad/(美)

例句 Examples

The polypeptide is made of amino acids.
这种多肽由氨基酸构成。

After translation, the polypeptide folds into a specific shape that determines its function.
翻译完成后,多肽会折叠成特定形状,而这种形状决定了它的功能。

词源 Etymology

**poly-**(多、许多)+ peptide(肽)。其中 peptide 源自希腊语 peptein(“消化”之意,早期与蛋白质分解/消化相关研究有关),组合起来字面含义即“由许多肽单位/氨基酸残基连接形成的链”。

相关词 Related Words

文学与作品 Literary Works

  • Molecular Biology of the Cell(《细胞的分子生物学》)在蛋白质结构与合成章节中频繁出现 polypeptide
  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》)用于讲解肽键、氨基酸聚合与蛋白质层级结构。
  • Molecular Biology of the Gene(《基因的分子生物学》)在“翻译”“多肽链延伸”等主题中常用该词。
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