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
bioRxiv : the preprint server for biology
|April 8, 2024
概括
赛林1mRNA结合蛋白1 (SERBP1),一种动态的RNA结合蛋白,调节基因表达和细胞过程. SERBP1与PARP1相互作用并影响多ADP-ribosyl) 化,这表明细胞调节中的反机制.
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:
- 具有内在无序区域的RNA结合蛋白 (RBPs) 通过液-液相分离 (LLPS) 调节分子复合体.
- 这些蛋白质的功能障碍,特别是在神经系统中,与神经退行性疾病和脑瘤有关.
- 赛林1mRNA结合蛋白1 (SERBP1) 是一个基本上无序的RBP,缺乏正规的RNA结合域,这表明它具有独特的调节功能.
研究的目的:
- 定义SERBP1的相互作用体,并揭示其在细胞功能中的新角色.
- 为了调查SERBP1在阿尔茨海默氏症等病理状况中的参与.
- 为了阐明SERBP1,G-四重复 (G4) 结合和多ADP-ribosyl) 化 (PARylation) 之间的关系.
主要方法:
- 相互作用组分析以确定SERBP1结合伙伴.
- 研究SERBP1在拼接,细胞分裂和核糖体生物发生中的作用.
- 分析SERBP1与病理聚合物的同定位及其与PARP1和PARylation机制的相互作用.
主要成果:
- SERBP1的互动组揭示了在拼接,细胞分裂和核糖体生物发生过程中的新角色.
- 在阿尔茨海默氏症的大脑中,SERBP1参与了病理性压力颗粒和Tau聚合物.
- SERBP1与G4结合剂和PARP1相互作用,影响PARylation并与PARylated蛋白质形成复合物.
结论:
- SERBP1是一个关键的调节器,参与各种细胞过程和病理状况.
- G4结合和PARylation是SERBP1功能的关键组成部分.
- 提出了一个反调节模型,其中SERBP1影响PARP1/PARylation,反之亦然,调节SERBP1在调节复合体中的功能.
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