V2EX ip3

IP3

Definition / 释义

IP3 通常指 肌醇三磷酸inositol trisphosphate,常见为 inositol 1,4,5-trisphosphate),是一种细胞内第二信使分子,常在信号传导中促使内质网释放 Ca(钙离子),从而引发多种细胞反应。(在不同领域里,“IP3”也可能有其他含义,但生物化学/细胞信号中这一义最常见。)

Pronunciation / 发音

/a pi θri/

Examples / 例句

IP3 helps release calcium inside the cell.
IP3 有助于在细胞内释放钙离子。

When a receptor is activated, IP3 is produced and then binds to IP3 receptors on the endoplasmic reticulum, triggering a rise in cytosolic calcium.
当受体被激活时,会产生 IP3;随后 IP3 与内质网上的 IP3 受体结合,引发细胞质钙离子浓度升高。

Etymology / 词源

IP3 是科学缩写,源自英文名称 inositol trisphosphate(肌醇 + 三磷酸)。其中 tri- 表示“三”,phosphate 指“磷酸(基团)”。在细胞信号领域里,IP3 常与由磷脂分解产生的信号分子一起被讨论,用来概括“肌醇环上带有三个磷酸基团的分子”。

Related Words / 相关词

Literary Works / 文学与著作例证

  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》):介绍 IP3 作为第二信使、与 Ca 信号的关系。
  • Molecular Biology of the Cell(Alberts,《细胞生物学分子》):在细胞信号传导章节讨论 PLCIP3Ca 通路。
  • Biochemistry(Berg, Tymoczko & Stryer,《斯特赖尔生物化学》):在膜信号与第二信使部分提及 IP3 的生成与作用。
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