V2EX isoenzyme

Isoenzyme

Definition / 释义

同工酶:指催化同一种化学反应、但在氨基酸序列、结构、理化性质或组织分布等方面不同的一组酶(通常由不同基因编码或同一基因的不同表达形式产生)。常用于医学检验与生物化学研究(如区分不同组织来源的酶活性)。

Pronunciation / 发音

/asonzam/

Examples / 例句

Isoenzymes of lactate dehydrogenase can be found in different tissues.
乳酸脱氢酶的同工酶可以在不同组织中发现。

Because each tissue expresses a characteristic isoenzyme pattern, clinicians may use isoenzyme analysis to help identify the source of tissue damage.
由于不同组织会表达具有特征性的同工酶谱,临床医生可能通过同工酶分析来帮助判断组织损伤的来源。

Etymology / 词源

iso- 来自希腊语 isos(“相同的、等同的”),enzyme 源自希腊语 enzymos(“在酵母中”),与早期对发酵现象的认识相关。合起来 isoenzyme 强调“功能相同(催化同一反应)但形式不同”的酶。

Related Words / 相关词

Literary Works / 文学与著作例证

  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》)中在酶学与代谢章节讨论同工酶概念与组织特异性。
  • Biochemistry by Berg, Tymoczko & Stryer(《斯特赖尔生物化学》)中用于解释同一反应的多种酶形式及其生理意义。
  • Harper’s Illustrated Biochemistry(《哈珀图解生物化学》)在临床相关内容中提及同工酶在诊断中的应用(如心肌与肝脏相关酶谱)。
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