V2EX michaelis-menten

Michaelis-Menten

释义 Definition

“Michaelis-Menten(米氏-门腾)”指描述酶催化反应速率与底物浓度关系的经典动力学模型/方程,常写作 Michaelis-Menten equation:在一定假设下,反应速率随底物浓度增加而上升,并逐渐趋于最大速率(Vmax)。该模型中常见参数包括 Km(米氏常数)与 Vmax。在一些更复杂体系中还存在其他动力学形式。

发音 Pronunciation (IPA)

/maklis mntn/

例句 Examples

Michaelis-Menten kinetics describes how an enzyme’s rate changes with substrate concentration.
米氏-门腾动力学描述了酶的反应速率如何随底物浓度变化。

By fitting the data to the Michaelis-Menten model, the researchers estimated Km and Vmax and compared mutant enzymes under identical conditions.
研究人员将数据拟合到米氏-门腾模型,估算了 Km 和 Vmax,并在相同条件下比较了突变体酶的差异。

词源 Etymology

该术语来自两位科学家的姓氏:德国生物化学家 Leonor Michaelis 与加拿大医生/生化学家 Maud Menten。他们在 20 世纪早期提出并完善了酶反应速率与底物浓度之间的定量关系,因此这一模型以二人姓氏命名。

相关词 Related Words

文献与著作中的出现 Literary / Notable Works

  • Michaelis, L. & Menten, M. L. (1913). Die Kinetik der Invertinwirkung. Biochemische Zeitschrift(该模型的经典来源之一)
  • Nelson & Cox, Lehninger Principles of Biochemistry(《雷宁格生物化学原理》:常规讲解米氏方程与参数意义)
  • Alberts et al., Molecular Biology of the Cell(《细胞的分子生物学》:在酶与代谢章节中常引用)
  • Cornish-Bowden, Fundamentals of Enzyme Kinetics(酶动力学专著:系统讨论米氏-门腾及其扩展)
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