V2EX phosphotransferase system

Phosphotransferase System

释义 Definition

磷酸转移酶系统(PTS):细菌中一种以磷酸化级联反应为核心的膜转运系统,常用于将糖类等底物在跨膜输入的同时进行磷酸化(例如把葡萄糖转运并转为葡萄糖-6-磷酸)。它既参与物质运输,也参与代谢调控。在不同语境下也可泛指“PTS糖转运系统”。

发音 Pronunciation (IPA)

/fsfotrnsfres sstm/(美式常见读法)

例句 Examples

The phosphotransferase system helps bacteria take up sugars.
磷酸转移酶系统帮助细菌摄取糖类。

In many bacteria, the phosphotransferase system couples membrane transport with phosphorylation, shaping carbon metabolism and gene regulation.
在许多细菌中,磷酸转移酶系统把跨膜转运与磷酸化过程耦合起来,从而影响碳代谢与基因调控。

词源 Etymology

该术语由三部分构成:**phospho-**(表示“磷酸/磷酸化”)+ transferase(“转移酶”,一类把化学基团从一个分子转移到另一个分子的酶;源自 transfer “转移” + -ase “酶”后缀)+ strong>system(“系统”)。整体字面意思就是“进行磷酸基团转移的一套系统”,对应其在细菌内通过一系列蛋白把磷酸“接力”传递的机制。

相关词 Related Words

文献与著作中的用例 Notable Works

  • Brock Biology of Microorganisms(《布洛克微生物学》)中在细菌糖摄取与代谢调控章节常讨论 PTS。
  • Molecular Biology of the Cell(《细胞的分子生物学》)及相关微生物代谢内容中会提及细菌的糖转运与调控机制,包括 PTS。
  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》)在代谢与调控相关内容中常以 PTS 作为细菌特有的转运-磷酸化耦联系统示例。
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