为TRIM25发现和优化一种共价配体,并将其应用于向蛋白质无化
Katherine A McPhie1, Diego Esposito1, Jonathan Pettinger2
1Molecular Structure of Cell Signalling Laboratory, The Francis Crick Institute 1 Midland Road London NW1 1AT UK katrin.rittinger@crick.ac.uk.
Chemical science
|May 14, 2025
概括
研究人员确定了TRIM25的新型共价配体,增强了其活性,并使向蛋白质无化成为可能. 这一发现推进了TRIM E3酶的诱导近距离领域.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- 三方基因 (TRIM) 家族E3酶在细胞功能中至关重要,包括免疫调节和癌症.
- 对于TRIM E3连接酶,存在有限的连接体,这阻碍了它们在诱导近距离技术中的应用.
- TRIM25是一种关键的TRIM E3结合酶,在细胞信号通路中起着重要的作用.
研究的目的:
- 为了识别和描述TRIM25 PRYSPRY域的新型共价配体配体.
- 探索这些配体在调节TRIM25活性和基于近距离的蛋白质修饰中的实用性.
- 推进使用TRIM E3结合酶的诱导接近工具的开发.
主要方法:
- 协价片段选与高通量化学相结合,用于连接体发现和优化.
- 生物化学测试以评估TRIM25自主无处置活性.
- 进行X射线晶体学以确定TRIM25 PRYSPRY与共价联体结合的结构.
- 开发包含已识别的配体的异构功能分子,用于向的无处不在.
主要成果:
- 鉴定了一种针对TRIM25的PRYSPRY基质结合域的新型共价接体.
- 证明优化的配体增强了TRIM25的自身ubiquitinationin vitro,并使TRIM25在活细胞中发挥作用.
- 对TRIM25 PRYSPRY-ligand复合物的X射线晶体结构的解.
- 在异性双功能化合物中成功应用联体,以实现新基质的向 ubiquitination.
结论:
- 已经成功地确定并优化了TRIM25的新型共价接体.
- 这种连接体有效调节TRIM25活性,并促进向蛋白质的泛化,扩大TRIM E3连接酶在化学生物学中的实用性.
- 这些发现为诱导近距离领域提供了一个新的工具,并为针对无素-蛋白酶体系统的治疗应用提供了潜力.
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