V2EX phosphoenolpyruvate

Phosphoenolpyruvate

定义 Definition

磷酸烯醇式丙酮酸(常缩写 PEP):一种在细胞代谢中非常重要的高能中间体,最常见于糖酵解途径中,能把磷酸基转移给 ADP 生成 ATP,并转变为丙酮酸(由丙酮酸激酶催化)。在糖异生与某些细菌的磷酸转移酶系统(PTS)中也很关键。

发音 Pronunciation

/fsfoinlparuvet/

例句 Examples

Phosphoenolpyruvate is a key intermediate in glycolysis.
磷酸烯醇式丙酮酸是糖酵解中的关键中间体。

In the final step of glycolysis, pyruvate kinase transfers a phosphate from phosphoenolpyruvate to ADP to produce ATP and pyruvate.
在糖酵解的最后一步,丙酮酸激酶将磷酸烯醇式丙酮酸上的磷酸基转移给 ADP,生成 ATP 和丙酮酸。

词源 Etymology

该词由三部分构成:phospho-(磷酸/磷酸基)+ enol(烯醇式,指一种互变异构形式)+ pyruvate(丙酮酸/丙酮酸根)。合起来强调:“带磷酸基的烯醇式丙酮酸”/strong>这一化学结构特征。

相关词 Related Words

文学与经典出处 Literary Works

  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》):在糖酵解、底物水平磷酸化与 PEP 的高磷酸转移势部分多次出现。
  • Biochemistry by Berg, Tymoczko & Stryer(《斯崔尔生物化学》/《生物化学》):讲解丙酮酸激酶反应与 PEP 的能量学。
  • Harper’s Illustrated Biochemistry(《哈珀图解生物化学》):在代谢通路图与临床相关代谢章节中出现。
  • Campbell Biology(《坎贝尔生物学》):在细胞呼吸与糖酵解概述中常见提及(多以 PEP 缩写形式出现)。
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