一种用于扩展遗传密码的双重用途非法典性氨基酸:结合金属结合和点击化学
Graham J Day1, Andrey V Zaytsev2, Richard C Brewster1
1EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, EH9 3FJ, Edinburgh, UK.
Angewandte Chemie (International ed. in English)
|September 13, 2024
概括
一种新的双重用途氨基酸Trz被合成并纳入蛋白质中. 它使生物对等反应和金属化能够用于成像和治疗中的应用.
科学领域:
- 生物化学 生化学
- 化学生物学 化学生物学
- 合成化学 合成化学
背景情况:
- 非正规氨基酸 (ncAAs) 扩大了蛋白质的功能.
- 生物直角点击化学允许对生物分子进行特定标记.
- 金属化分子可以集成到蛋白质中,用于各种应用.
研究的目的:
- 设计和合成一种用于蛋白质工程的双重用途的ncaa (Trz).
- 通过遗传密码扩展来证明Trz被纳入蛋白质支架.
- 展示Trz在生物对等反应和金属离子协调中的实用性.
主要方法:
- 合理设计和合成的Trz氨基酸.
- 遗传密码扩展用于特异性将Trz纳入蛋白质支架的特定位置.
- 反向电子需求迪尔斯-阿尔德 (IEDDA) 点击反应用于蛋白质标记.
- 对循环金属化 (III) 复合物与Trz残留物的协调.
主要成果:
- 成功合成并将Trz遗传纳入蛋白质中.
- 用bicyclononyne标记特定位点蛋白质的IEDDA点击反应的演示.
- 一个 ((III) 中心成功地协调到含有Trz的蛋白质.
- 在IEDDA点击反应时观察发光变化,使监控成为可能.
结论:
- Trz是一种多功能双重用途的ncaa,具有5-pyridyl-1,2,4-triazine系统.
- 在蛋白质支架中,Trz促进了生物对等点击化学和金属离子化.
- 这为开发生物直角发光探针,成像剂和治疗工具提供了一个新的平台.
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