人类核细胞蛋白7 (NOL7) 对于早期的rRNA前积累和18S前rRNA处理是必需的
Mason A McCool1, Carson J Bryant1, Hannah Huang1
1Department of Molecular Biophysics & Biochemistry, Yale University School of Medicine, New Haven, CT, USA.
RNA biology
|May 29, 2023
概括
人类NOL7是早期前核糖体RNA (前rRNA) 积累和处理所需的必不可少的U3关联蛋白 (UTP),影响蛋白质合成和核细胞应激.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 核糖核糖体生物发生是一种保存的,必不可少的细胞过程.
- U3关联蛋白 (UTPs) 对于早期的核糖体生物发生步骤至关重要.
- 酵母Utp9和Bud21 (Utp16) 的人类同类物以前未被确定.
研究的目的:
- 识别酵母Bud21 (Utp16) 的人类正义基因.
- 调查识别人类正义学家在核糖体生物生成中的作用.
- 确定这个蛋白在人类细胞中的功能意义.
主要方法:
- 进行比较基因组学以识别蛋白质 ортолог.
- 在人类细胞中使用siRNA的枯竭研究.
- 对前核糖体RNA (pre-rRNA) 水平和加工中间体的分析.
- 评估蛋白质合成速度.
- 核细胞应激反应标志物的监测.
主要成果:
- NOL7被确定为酵母Bud21的可能的人类正经体.
- NOL7的枯竭会影响早期的rRNA前积累和18S前rRNA处理.
- 失去NOL7功能会降低整体蛋白质合成.
- 在人类细胞中,NOL7的枯竭会诱导细胞核应激反应.
- 人类NOL7是必不可少的,与非必不可少的酵母Bud21不同.
结论:
- 人类NOL7是对核糖体生物生成至关重要的重要UTP.
- 在保持rRNA前水平和处理中,NOL7起着至关重要的作用.
- NOL7功能对于细胞平衡和预防核应激至关重要.
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