V2EX tca cycle

TCA Cycle

释义 Definition

TCA cycle三羧酸循环,也叫柠檬酸循环克雷布斯循环。它是细胞呼吸中的关键代谢途径,在线粒体(真核生物)或细胞质相关区域(原核生物)中进行,把乙酰辅酶A逐步氧化,产生 NADH、FADHATP/GTP,为后续的氧化磷酸化提供能量与还原当量。(在不同语境下也可能泛指相关的“中心代谢循环”。)

发音 Pronunciation (IPA)

/ti si e sakl/

例句 Examples

The TCA cycle generates NADH for the electron transport chain.
TCA循环产生NADH,为电子传递链提供还原当量。

Because the TCA cycle is central to metabolism, disruptions can affect energy production and the synthesis of key biomolecules.
由于TCA循环处于代谢中心位置,一旦受干扰,就可能同时影响能量产生以及多种关键生物分子的合成。

词源 Etymology

TCAtricarboxylic acid(三羧酸) 的缩写;之所以这样命名,是因为该循环中的一些中间产物(如柠檬酸)含有三个羧基(-COOH)。该循环也常被称为 citric acid cycle(柠檬酸循环),因为起始形成的关键中间体是柠檬酸;又称 Krebs cycle(克雷布斯循环),来自对其研究与阐明做出重要贡献的生化学家 Hans Krebs 的姓氏。

相关词 Related Words

文学与经典作品 Literary Works

  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》)
  • Biochemistry by Berg, Tymoczko & Stryer(《斯特赖尔生物化学》)
  • Campbell Biology(《坎贝尔生物学》)
  • Molecular Biology of the Cell(《细胞的分子生物学》)
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