V2EX acetyl-coa

Acetyl-CoA

Definition / 释义

乙酰辅酶A(Acetyl coenzyme A):细胞代谢中的关键分子,由乙酰基辅酶A(CoA)结合而成。它是把碳源“送入”多条代谢通路的枢纽,最常见的是进入三羧酸循环(TCA/Krebs cycle)用于能量产生,也参与脂肪酸合成、胆固醇合成等过程。(在生物化学语境中通常写作 acetyl-CoA。)

Pronunciation / 发音

/sitl koe/

Examples / 例句

Acetyl-CoA enters the citric acid cycle to help produce energy.
乙酰辅酶A进入柠檬酸循环,帮助产生能量。

When glucose is scarce, fatty acids are broken down to generate acetyl-CoA, which can be used for ATP production or ketone body formation.
当葡萄糖不足时,脂肪酸会被分解生成乙酰辅酶A,它可用于合成ATP或形成酮体。

Etymology / 词源

acetyl- 来自“acetic(乙酸的)”相关的化学命名,指含有乙酰基(CHCO)CoAcoenzyme A(辅酶A) 的缩写。该术语用于强调:这是“乙酰基 + 辅酶A”的结合体,是许多代谢反应中常见的“活化乙酰基载体”。

Related Words / 相关词

Literary Works / 文学与著作例证

  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》):在糖代谢、脂肪酸氧化与TCA循环章节中多次讨论 acetyl-CoA 的枢纽作用。
  • Biochemistry(Berg, Tymoczko & Stryer,《斯特赖尔生物化学》):以 acetyl-CoA 为核心串联能量代谢与生物合成途径。
  • Molecular Biology of the Cell(Alberts,《细胞的分子生物学》):在细胞呼吸与线粒体代谢相关内容中出现 acetyl-CoA。
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