V2EX floppase

Floppase

释义 Definition

floppase(生物化学/细胞生物学):翻转酶(外翻酶),指一类通常依赖 ATP 的膜蛋白转运酶,能把特定磷脂从细胞膜外侧(外叶)转运到内侧(内叶),从而维持膜的脂质不对称性。(该词在不同语境下有时也被更宽泛地用于指“把脂质往内侧翻转”的活性。)

发音 Pronunciation (IPA)

/flpes/(英式)
/flpes/(美式)

例句 Examples

Floppase helps keep certain lipids on the inner side of the cell membrane.
翻转酶有助于把某些脂质维持在细胞膜的内侧。

Loss of floppase activity can disrupt membrane asymmetry and affect signaling, vesicle trafficking, and cell survival.
翻转酶活性缺失会破坏膜的不对称性,并影响信号传导、囊泡运输以及细胞存活。

词源 Etymology

floppase 是现代生物学造词,来自动词 flop(“啪嗒一翻/翻动”之意,这里引申为“翻转到另一侧”)加上酶名常见后缀 -ase(表示“酶”)。它与 flippase(常指把脂质翻向外叶/或更广义的翻转酶,具体取决于文献定义)构成对照,用描述膜脂“翻转”方向相关的转运活性。

相关词 Related Words

文学与典籍 Literary Works

  • Molecular Biology of the Cell(Alberts 等,《细胞的分子生物学》;膜脂不对称性与相关转运蛋白章节常出现该术语)
  • Lehninger Principles of Biochemistry(Nelson & Cox,《莱宁格生物化学原理》;膜结构与脂质运输相关内容可能提及)
  • Annual Review 系列综述(如 Annual Review of Biochemistry / Annual Review of Cell and Developmental Biology 中关于膜脂翻转、P4-ATPase/ABC 转运体的综述文章常使用该词)
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