V2EX ligand-gated

Ligand-gated

定义 Definition

ligand-gated(配体门控的):指一种通道或受体在特定“配体”(如神经递质、激素或药物分子)结合后,发生构象变化而被“打开/关闭”,从而允许离子或信号通过。常见于配体门控离子通道(ligand-gated ion channels)。(在不同语境下也可泛指“由配体结合所控制/调节”的机制。)

发音 Pronunciation

/lnd etd/

例句 Examples

Ligand-gated channels open when a neurotransmitter binds to them.
配体门控通道在神经递质与其结合时会打开。

Unlike voltage-gated channels, ligand-gated receptors convert a chemical signal into a rapid electrical response at the synapse.
与电压门控通道不同,配体门控受体能在突触处把化学信号转化为快速的电信号反应。

词源 Etymology

ligand 源自拉丁语 ligare(“捆绑、结合”),在生物化学中指能与受体/蛋白结合的分子;gated 来自 gate(“门、闸门”),引申为“受控制地开启/关闭”。合起来 ligand-gated 字面意思就是“由配体结合来开关的(像门一样受控)”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Principles of Neural Science(Kandel 等):讨论突触传递与配体门控离子通道在神经信号中的作用。
  • Molecular Biology of the Cell(Alberts 等):在细胞信号与膜蛋白章节中介绍ligand-gated ion channels
  • Ion Channels of Excitable Membranes(Bertil Hille):系统阐述包括配体门控与电压门控通道在内的离子通道机制。
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