设计者适配器蛋白质用于的功能转化为小分子体,以实现细胞内催化蛋白质修饰
Akiko Fujimura1, Hisashi Ishida2, Tamiko Nozaki1
1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.
ACS central science
|November 30, 2023
概括
研究人员开发了一种联体插入的二叶酸减少酶 (eDHFR) 融合蛋白 (PLIED),使细胞透的合成功能小分子 (SFSM) 能够准感兴趣的蛋白质 (POI). 这种适配器允许精确的细胞内蛋白质修饰,扩展化学生物学工具.
科学领域:
- 化学生物学 化学生物学
- 分子生物学分子生物学
- 蛋白质工程是指蛋白质工程.
背景情况:
- 类是有效的生物宏分子连接体,但细胞透性和稳定性较差.
- 使用小分子向细胞内的特定蛋白质仍然是化学生物学中的一个挑战.
研究的目的:
- 开发一种通用适配器系统,以细胞透的合成功能小分子 (SFSM) 准感兴趣的蛋白质 (POI).
- 为了使不透的配体转化为细胞透的小分子配体,用于细胞内应用.
主要方法:
- 设计了一种联体插入的eDHFR (PLIED) 融合蛋白,作为分子适配器.
- 使用三甲 (TMP) 结合的SFSM来结合PLIED复合物的eDHFR部分.
- 采用 lysine-acylating BAHA 催化剂作为 SFSM 来证明蛋白质的合成乙化.
主要成果:
- 在特定的氨酸残留物中,证明了目标蛋白 (MDM2和染色素组合素) 的转化后和合成乙化成功.
- 在乙化中展示了残留选择性,可通过三元复合物的分子动力学模拟来预测.
- 验证了PLIED系统作为POI准的通用适配器.
结论:
- PLIED适配器系统有效地将体识别与小分子传递相结合,用于向蛋白质修饰.
- 这种方法通过将它们转化为稳定,细胞透的小分子,显著提高了联体的实用性.
- 这项研究扩大了细胞内化学生物学工具箱,提供了一种用于精确蛋白质功能化的新方法.
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