V2EX porin

Porin

释义 Definition

porin(孔蛋白):一种位于细菌外膜以及线粒体/叶绿体外膜的膜蛋白,能够形成“孔道”,让水、离子和小分子(如糖类、氨基酸等)在膜两侧进行被动扩散。

发音 Pronunciation (IPA)

/prn/

例句 Examples

Porins let small molecules pass through the bacterial outer membrane.
孔蛋白让小分子穿过细菌的外膜。

Because the antibiotic enters through porins, changes in porin expression can increase drug resistance.
由于抗生素常通过孔蛋白进入细菌,孔蛋白表达的变化可能会提高耐药性。

词源 Etymology

porin 来自 pore(孔) 加上常见的蛋白/物质后缀 -in,字面意思就是“与孔有关的蛋白”。该词用于强调它的核心功能:在膜上形成孔道,提供通透路径。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Molecular Biology of the Cell(《细胞的分子生物学》)在膜运输与细菌外膜结构相关章节中讨论 porins。
  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》)在生物膜与跨膜通道蛋白相关内容中提及 porins/类似孔道蛋白。
  • Brock Biology of Microorganisms(《布洛克微生物学》)在革兰氏阴性菌外膜与物质通透性章节中介绍 porins 及其与耐药性的关系。
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