V2EX deamination

Deamination

定义 / Definition

脱氨(作用):指从分子中移除氨基(-NH)的过程,常见于氨基酸、核苷酸等的代谢与化学反应中;在生物体内可由酶催化发生。该词在生物化学与分子生物学语境中最常用。

发音 / Pronunciation (IPA)

/dimnen/

例句 / Examples

Deamination removes an amino group from an amino acid.
脱氨作用会从氨基酸上移除一个氨基。

Spontaneous deamination of cytosine can cause mutations if the DNA repair system fails to correct it.
胞嘧啶的自发脱氨如果未被 DNA 修复系统纠正,可能会导致突变。

词源 / Etymology

de- 表示“去除、移开”,amination 来自 amine(胺)相关的“引入/具有氨基”的概念;合起来字面意思就是“去除氨基”。该术语多用于描述生物分子或有机化合物中氨基被移除的反应类型。

相关词 / Related Words

文学作品示例 / Literary Works

  • James D. Watson The Double Helix(通俗叙述 DNA 研究史的作品中会涉及碱基变化与突变相关概念,相关背景常与如“脱氨导致的碱基改变”等知识点相连)
  • Richard Dawkins The Selfish Gene(讨论遗传与突变机制时,常出现与 DNA 变化、突变来源相关的术语语境,脱氨作为常见化学改变之一可能在相关章节或扩展阅读中出现)
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