V2EX geranylgeranyltransferase

Geranylgeranyltransferase

释义 Definition

牛儿基牛儿基转移酶:一种催化“牛儿基牛儿基(GG,20 碳异戊二烯基)”从供体分子(通常是 GGPP,牛儿基牛儿基焦磷酸)转移到蛋白质上的酶,从而使蛋白质发生异戊二烯化/烯丙基化(prenylation),帮助蛋白质更好地定位到细胞膜并参与信号传导。(该类酶有不同类型,如作用于 Rab 蛋白或 CaaX 基序蛋白的不同复合体。)

发音 Pronunciation (IPA)

/drenidrnaltrnsfres/

例句 Examples

Geranylgeranyltransferase helps certain proteins attach to cell membranes.
牛儿基牛儿基转移酶帮助某些蛋白质附着到细胞膜上。

Inhibiting geranylgeranyltransferase can disrupt prenylation and alter the trafficking of small GTPases involved in cell signaling.
抑制牛儿基牛儿基转移酶会干扰蛋白质的异戊二烯化,从而改变参与细胞信号传导的小 GTP 酶的运输与定位。

词源 Etymology

该词由三部分构成:**geranylgeranyl-**(“牛儿基牛儿基”,一种由两个“牛儿基/异戊二烯单元”延伸形成的 20 碳侧链名)+ transferase(“转移酶”,指催化基团转移的酶类后缀)。整体字面意思就是“转移牛儿基牛儿基的酶”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • 《Molecular Biology of the Cell》(Molecular Biology of the Cell):在“膜定位与蛋白质脂质修饰/异戊二烯化”相关章节中讨论到 geranylgeranyltransferase 及其对小 GTP 酶(如 Rab 蛋白)的作用。
  • 《Lehninger Principles of Biochemistry》(Lehninger 生物化学原理):在“脂类衍生物与蛋白质修饰/细胞信号”相关内容中提及蛋白质的异戊二烯化以及相关转移酶(包括 geranylgeranyltransferase)。
  • 《The Cell: A Molecular Approach》(细胞:分子方法):在“蛋白质靶向与膜结合、翻译后修饰”部分常出现该术语,用于解释蛋白如何通过 GG 修饰实现膜锚定与运输调控。
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