V2EX thioesterase

Thioesterase

释义 Definition

硫酯酶:一类催化硫酯(thioester)键水解的酶,常把“酰基-硫”键断开,生成相应的羧酸(或其衍生物)巯基化合物(如辅酶A或载体蛋白上的巯基)。在脂肪酸合成、聚酮/非核糖体肽生物合成等途径中常见。(在不同系统中也可指负责“链终止/释放产物”的结构域或独立酶。)

发音 Pronunciation (IPA)

/θaostres/

例句 Examples

The thioesterase releases the fatty acid from the enzyme.
硫酯酶将脂肪酸从该酶复合体上释放出来。

In polyketide biosynthesis, a thioesterase domain can terminate chain elongation and cyclize the product.
在聚酮类生物合成中,硫酯酶结构域可终止链延长,并促使产物发生环化。

词源 Etymology

由三部分构成:**thio-**(表示“硫”,源自希腊语 theion,意为“硫”)+ ester(“酯”)+ -ase(常见酶类后缀,表示“某种酶”)。合起来字面意思就是“作用于硫酯的酶”。

相关词 Related Words

文学与典籍 Literary Works

  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》):在脂肪酸合成与酶催化章节中常提到 thioesterase(如脂肪酸合成酶的链释放步骤)。
  • Biochemistry by Berg, Tymoczko & Stryer(《斯特赖尔生物化学》):在脂肪酸代谢、酰基转移与相关酶类中出现该术语。
  • NatureScience 等期刊关于脂肪酸合成酶(FAS)聚酮合成酶(PKS)非核糖体肽合成酶(NRPS)机制的研究论文中,常用 “thioesterase (TE) domain” 描述产物释放/环化相关功能。
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