V2EX pyruvate

Pyruvate

定义 Definition

n. 生物化学中指丙酮酸的阴离子、盐或酯,在代谢语境中通常特指丙酮酸阴离子。它是糖酵解的重要产物,也是连接糖代谢、发酵、氨基酸代谢和进入三羧酸循环前反应的中心代谢物。许多细胞会根据氧气供应、酶活性和细胞状态,将其进一步转化为乙酰辅酶 A、乳酸、丙氨酸或其他代谢中间体。

发音 Pronunciation

/paruvet/

例句 Examples

Glucose is broken down into pyruvate during glycolysis.
葡萄糖在糖酵解过程中被分解为丙酮酸。

Under low-oxygen conditions, many cells convert pyruvate into lactate to help regenerate NAD for continued glycolysis.
在低氧条件下,许多细胞会把丙酮酸转化为乳酸,以帮助再生 NAD,使糖酵解继续进行。

词源 Etymology

来自 pyruvic acid,其中 pyruvic 源于与加热葡萄酸等物质得到的酸有关的早期化学命名;后缀 -ate 在化学中常表示某种酸的盐、酯或阴离子。因此 pyruvate 字面上表示“丙酮酸形成的盐、酯或阴离子”。

相关词 Related Words

科学文献用例 Scientific Usage

  • 生物化学教材常在糖酵解、发酵、三羧酸循环入口反应和能量代谢章节中使用该词。
  • 细胞生物学和生理学文献中常用它描述细胞如何在不同氧气和营养条件下处理碳源。
  • 临床和实验室语境中可见于代谢检测、细胞培养实验、酶活性分析和乳酸生成相关研究。
  • 代谢组学论文常把它列为中心碳代谢中的关键小分子代谢物。
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