V2EX lipid raft

Lipid Raft

定义 Definition

脂筏(lipid raft):细胞膜中富含胆固醇鞘脂的、相对更“有序”的微小膜区(微域)。它常被认为能聚集特定蛋白质,参与信号传导、膜运输、病毒入侵等过程。(该术语在细胞生物学中也有不同模型与争议点,但核心指“膜的功能性微域”。)

发音 Pronunciation

/lpd rft/

例句 Examples

Lipid rafts help organize proteins on the cell membrane.
脂筏有助于在细胞膜上组织并聚集蛋白质。

Disrupting cholesterol can alter lipid raft structure and change signaling pathways involved in immune responses.
破坏胆固醇含量可能改变脂筏结构,并影响与免疫反应相关的信号通路。

词源 Etymology

lipid 源自希腊语 lipos(“脂肪”),指脂类物质;raft 原义为“筏、木排”,引申为“漂浮的集合体”。合起来形象地表达:在流动的细胞膜“海面”上,存在一些相对稳定、成分特殊、像“筏”一样的微区。

相关词 Related Words

文献与作品 Literary Works

  • Molecular Biology of the Cell(Alberts 等,《细胞的分子生物学》)
  • Biochemistry(Berg, Tymoczko & Stryer,《生物化学》)
  • Simons, K. & Ikonen, E. (1997). “Functional rafts in cell membranes.” Nature(提出并推广“rafts/脂筏”概念的重要论文)
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