carboxyl terminal

例句：

1. 1.The carboxyl terminal of the proteinis crucial for its function.
   蛋白质的羧基末端对其功能至关重要。
2. 2. The researchersfound that the carboxyl terminal plays a vital rolein the process.
   研究人员发现羧基末端在过程中起着至关重要的作用。
3. 3. The carboxyl terminal of the enzyme is essential forits activity.
   酶的羧基末端对其活性至关重要。