V2EX enterokinase

Enterokinase

定义 Definition

enterokinase(肠激酶):一种主要存在于小肠黏膜上的酶,作用是将胰腺分泌的胰蛋白酶原(trypsinogen)切割并激活为胰蛋白酶(trypsin),从而启动一系列消化酶原的级联激活过程。(在许多现代资料中也常称为 enterokinase/enteropeptidase,即“肠肽酶/肠激酶”。)

发音 Pronunciation (IPA)

/entrokanez/

例句 Examples

Enterokinase activates trypsinogen in the small intestine.
肠激酶在小肠中激活胰蛋白酶原。

In pancreatic insufficiency, reduced downstream protease activity can occur if enterokinase-mediated activation of trypsinogen is impaired.
在胰腺功能不全的情况下,如果肠激酶介导的胰蛋白酶原激活受损,可能会导致下游蛋白酶活性降低。

词源 Etymology

该词由 **entero-**(表示“肠的”,源自希腊语 enteron “肠”)+ -kinase(“激酶/促活酶”,与“促进反应进行”相关的构词成分)组成,字面含义可理解为“与肠道相关、用于促活(激活)的酶”。历史上因其能“启动”消化酶活化过程而得名;现代命名中也常用 enteropeptidase 强调其属于肽酶并进行特定位点切割。

相关词 Related Words

文学/著作中的用例 Literary Works

  • Guyton and Hall Textbook of Medical Physiology(《盖顿与霍尔医学生理学》)
  • Harper’s Illustrated Biochemistry(《哈珀图解生物化学》)
  • Robbins & Cotran Pathologic Basis of Disease(《罗宾斯与科特兰疾病的病理基础》)
  • Lehninger Principles of Biochemistry(《莱宁格生物化学原理》)
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