希斯和PARP1上的氨酸ADPr是以为连接的无处不在的细胞标
Andreas Kolvenbach1, Maria Dilia Palumbieri1, Thomas Colby1
1Max Planck Institute for Biology of Ageing, Cologne, Germany.
Nature chemical biology
|July 9, 2025
概括
研究人员发现了一种新的细胞修饰:ADP-ribosyl-ubiquitylation. 这个过程将无处不在与胺ADP-ribosylation联系起来,揭示了对DNA损伤反应和细胞信号通路的新见解.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生化学
- 分子生物学分子生物学
背景情况:
- ADP-ribosylation和ubiquitylation是关键的细胞过程.
- 它们的相互作用是复杂的,观察到ADP-ribosylation-dependent的无处不在.
- 对于ADP-ribose的以结无处不在的特定修饰位仍未知.
研究的目的:
- 为了确定细胞点和以相关的ADP-ribose无处不在的部位.
- 为了描述新发现的ADP-ribosyl-ubiquitylation修饰的特征.
- 开发检测这种双重修饰的方法.
主要方法:
- 根据修饰的化学特征量身定制的蛋白质组学策略.
- 使用RNF114的zfDi19和无素相互作用动机域 (ZUD) 的丰富.
- 使用工程ZUD进行特定化学化和免疫阻塞.
主要成果:
- 确定了DNA损伤诱导的氨酸单-ADP-ribosylation作为无处不在的目标.
- 发现了 histones 和 PARP1.1 上的 ADP-ribosyl-linked 血清无处不在位点.
- 开发了一个模块化试剂来检测这种双重修饰.
结论:
- 确定的ADP-ribosyl-ubiquitylation作为一种内源的血清后翻译修饰.
- 开发的方法可以揭示这种修饰的广泛发生.
- 这种方法可能会在不同的信号通路中揭示其他结合化学物质.
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