SERBP1与PARP1相互作用,存在于PARylation依赖的蛋白质复合体中,调节剪接,细胞分裂和核糖体生物发生
Kira Breunig1, Xuifen Lei1, Mauro Montalbano2,3
1Children's Cancer Research Institute, UT Health San Antonio, San Antonio, United States.
eLife
|February 12, 2025
概括
塞尔1mRNA结合蛋白1 (SERBP1),是一种无序的蛋白质,调节基因表达和细胞过程. 它与PARP1相互作用并影响多ADP-ribosyl化,这表明细胞调节中的反循环.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 在RNA结合蛋白 (RBPs) 中,内在无序区域 (IDR) 驱动液体-液体相分离 (LLPS) 和无膜有机体的形成.
- IDR-RBPs的功能障碍与神经退行性疾病和脑瘤有关.
- 塞尔1mRNA结合蛋白1 (SERBP1) 是一个基本上无序的RBP,没有正规的RNA结合域.
研究的目的:
- 定义SERBP1互动组并阐明其在细胞功能中的作用.
- 为了调查SERBP1在阿尔茨海默氏症等病理状况中的参与.
- 探讨SERBP1,G-四重复 (G4) 结合,和多ADP-ribosyl) 化 (PARylation) 的关系.
主要方法:
- 相互作用组映射以确定SERBP1结合伙伴.
- 分析SERBP1在拼接,细胞分裂和核糖体生物发生中的作用.
- 研究SERBP1与G4结合剂,PARP1和PARylated蛋白质的关联.
主要成果:
- 在阿尔茨海默氏症的大脑中,SERBP1参与压力颗粒和Tau聚合物.
- SERBP1与G4结合剂相互作用,这表明G4结合对其功能至关重要.
- SERBP1与PARP1相互作用,影响PARylation,并且存在于与PARylated蛋白质的复合体中.
结论:
- 在剪接,细胞分裂和核糖体生物发生过程中,SERBP1具有新的作用.
- SERBP1与G4结合剂和PARP1的关联突出了其监管功能.
- 提出了一个反模型,其中SERBP1调节PARP1/PARylation,反之亦然.
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