V2EX lipid bilayer

Lipid Bilayer

定义 Definition

lipid bilayer(脂质双层):由两层脂质分子(主要是磷脂)排列形成的薄膜结构,亲水“头部”朝向水环境,疏水“尾部”相对向内。它是细胞膜和许多细胞器膜的基本骨架,具有屏障、选择性通透与承载膜蛋白等功能。(在不同语境下也可泛指“膜的双层结构”。)

例句 Examples

A cell membrane is made of a lipid bilayer.
细胞膜由脂质双层构成。

Changes in temperature can alter the fluidity of the lipid bilayer, which affects how membrane proteins function.
温度变化会改变脂质双层的流动性,从而影响膜蛋白的功能。

发音 Pronunciation (IPA)

/lpd baler/

词源 Etymology

lipid 来自希腊语 lipos(意为“脂肪”),指脂类物质。bilayer 由 **bi-**(“双、两”)+ layer(“层”)构成,字面意思是“两层”。合起来就是“脂类形成的双层结构”。

相关词 Related Words

文学与著作举例 Literary Works

  • Molecular Biology of the Cell(Alberts 等):在细胞膜章节中系统讨论脂质双层的结构与功能。
  • Lehninger Principles of Biochemistry(Nelson & Cox):在膜脂与膜结构部分频繁使用并解释该术语。
  • Biochemistry(Berg, Tymoczko & Stryer):在生物膜与膜蛋白章节中以“lipid bilayer”为核心概念展开。
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