小分子封闭分裂-氨酸酸酶和直角分裂-氨酸激酶
Karla Camacho-Soto1, Javier Castillo-Montoya, Blake Tye
1Department of Chemistry and Biochemistry, University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States.
Journal of the American Chemical Society
|November 20, 2014
概括
研究人员开发了由小分子控制的分裂蛋白激酶和酸酶. 这项技术允许研究和治疗应用的信号通路的精确后翻译调节.
科学领域:
- 分子生物学分子生物学
- 生物化学 生物化学
- 细胞信号传递 细胞信号传递
背景情况:
- 蛋白激酶和酸酶通过酸化和脱酸化可逆地控制细胞信号通路.
- 控制这些酶的现有方法在精度和直角性上是有限的.
- 分裂蛋白系统提供了一种条件激活酶的方法.
研究的目的:
- 设计和验证可以通过小分子控制的分裂氨酸酸酶 (PTPs) 和分裂氨酸激酶 (PTKs).
- 通过使用不同的化学诱导二元化 (CID) 来证明直角控制.
- 建立一种方法来对哺乳动物细胞中这些酶进行后翻译,正交的小分子控制.
主要方法:
- 分裂-PTP和分裂-PTK与FKBP和FRB领域融合的合理设计.
- 激活使用拉帕素,酸和吉布雷利酸作为正交CID的分裂酶.
- 在哺乳动物细胞中对酶活性调节的验证.
主要成果:
- 成功设计和验证了三种可通过拉巴素控制的分裂氨酸酸酶 (PTP).
- 通过使用酸和吉伯酸,证明了分裂型铁酸激酶 (PTK) 的正交控制.
- 在哺乳动物细胞中展示了由直角CIDs对设计的分裂酸酶和分裂激酶的激活.
结论:
- 一种新的方法允许对用户定义的分离PTK和分离PTP进行翻译后,正交的小分子控制.
- 这种方法可以精确地查询和重新设计依赖酸化的信号通路.
- 开发的系统具有很大的潜力,可以促进细胞信号研究和开发新的治疗策略.
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