V2EX c-terminus

C-Terminus

定义 Definition

C-terminus(C 端、羧基末端):指蛋白质或多肽链的末端,该末端具有游离的羧基(-COOH)。在蛋白质结构与功能中,C 端常参与定位信号、修饰位点(如磷酸化、泛素化)或与其他分子相互作用。(另有对应概念 N-terminus / N 端。)

发音 Pronunciation (IPA)

/si trmns/

例句 Examples

The mutation is located at the protein’s C-terminus.
该突变位于该蛋白的 C 端(羧基末端)。

Researchers tagged the C-terminus with GFP to track where the protein goes inside the cell.
研究人员在 C 端连接了 GFP 标签,以追踪该蛋白在细胞内的去向。

词源 Etymology

C- 来自 carboxyl(羧基) 的首字母,表示“带羧基的一端”;terminus 源自拉丁语 terminus,意为“边界、终点”。合起来表示“多肽链以羧基结尾的末端”。

相关词 Related Words

文学与经典著作中的用例 Literary Works

  • Molecular Biology of the Cell(《细胞的分子生物学》)在蛋白质定位、结构域与末端信号讨论中常出现 C-terminus
  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》)在肽链方向性(N 端→C 端)、蛋白质结构与修饰章节中使用该术语。
  • Molecular Cloning: A Laboratory Manual(《分子克隆实验手册》)在蛋白融合标签构建(如 C 端标签)与表达载体设计语境中频繁出现。
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