V2EX methyltransferase

Methyltransferase

Definition|释义

甲基转移酶:一类酶,能够把甲基(CH)从供体分子(常见为 S-腺苷甲硫氨酸,SAM)转移到受体分子上;受体可以是 DNA、RNA、蛋白质或小分子。它常与基因表达调控、表观遗传修饰、代谢与解毒等过程相关。

Pronunciation|发音(IPA)

/mθltrnsfres/

Examples|例句

DNMT1 is a methyltransferase that maintains DNA methylation.
DNMT1 是一种甲基转移酶,负责维持 DNA 的甲基化状态。

By altering specific histone methyltransferases, the cell can switch entire gene programs on or off.
通过改变特定的组蛋白甲基转移酶,细胞可以将整套基因程序打开或关闭。

Etymology|词源

methyl- 来自“甲基(CH)”;transferase 意为“转移酶”(把某个化学基团从一个分子转移到另一个分子)。合起来即“转移甲基的酶”。该词主要用于生物化学与分子生物学语境。

Related Words|相关词

Literary Works|文学与著作中的用例

  • 《Molecular Biology of the Cell》(Alberts 等):在表观遗传与染色质章节中讨论 DNA/组蛋白修饰时常出现 methyltransferase
  • 《Lehninger Principles of Biochemistry》:在酶学与一碳代谢(含 SAM 相关反应)中涉及多类 methyltransferase
  • 《Epigenetics》(Allis, Jenuwein, Reinberg 等):系统介绍 DNA 与组蛋白甲基转移酶在基因调控中的作用。
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