V2EX prophage

Prophage

释义 Definition

前噬菌体:噬菌体(感染细菌的病毒)的基因组整合进细菌染色体或以稳定形式存在于细胞内的状态。它通常处于“潜伏/静默”阶段,随宿主细胞复制而被一起复制;在特定刺激下可能被诱导进入裂解周期,产生新的噬菌体。(该词在微生物学与分子生物学中很常见。)

发音 Pronunciation (IPA)

/pro.fed/

例句 Examples

The bacterium carries a prophage in its genome.
这种细菌的基因组中携带一个前噬菌体。

Under stress, the prophage can be induced to excise from the chromosome and produce new phage particles, altering the bacterium’s traits.
在应激条件下,前噬菌体可能被诱导从染色体切出并产生新的噬菌体颗粒,从而改变细菌的性状。

词源 Etymology

pro-(前、预先)+ phage(来自希腊语 phagein,意为“吞食”),与“bacteriophage(噬菌体,字面义为‘吞食细菌者’)”同源;prophage指“处在前/潜伏阶段的噬菌体(基因组)”,强调其整合或潜伏的状态。

相关词 Related Words

文学与著作中的用例 Literary & Notable Works

  • Molecular Biology of the Gene(Watson 等,经典分子生物学教材中讨论溶原性与前噬菌体)
  • Bacteriophages: Biology and Applications(介绍噬菌体生物学与应用,包含前噬菌体与溶原转换等内容)
  • The Phage and the Origins of Molecular Biology(“噬菌体学派”相关文集中涉及溶原性研究与前噬菌体概念)
  • Fields Virology(病毒学权威参考书,涉及噬菌体与相关遗传机制时会出现该术语)
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