Hsp90分子伴侣通过准内在无序的区域来控制客户端蛋白质
Janhavi A Kolhe1, Neethu L Babu1, Brian C Freeman1
1Department of Cell and Developmental Biology, School of Molecular and Cellular Biology, University of Illinois-Urbana-Champaign, Urbana, IL, USA.
Molecular cell
|June 9, 2023
概括
热冲击蛋白90 (Hsp90) 通过与客户端蛋白质的内在无序区域相互作用来维持细胞蛋白质的健康. 这个陪伴者还确保了核糖体启动的忠实性,这对于细胞平衡至关重要.
科学领域:
- 分子生物学分子生物学
- 细胞平衡是细胞的平衡.
- 蛋白质质量控制 蛋白质质量控制
背景情况:
- 分子陪伴物,包括热冲击蛋白90 (Hsp90),对于维持细胞蛋白质健康和平衡至关重要.
- Hsp90是一种必不可少的真核伴侣,参与调节许多客户端蛋白质.
研究的目的:
- 描述定义Hsp90.0物理互动组的特征.
- 了解Hsp90如何与客户端蛋白相互作用并保持其健康.
- 研究HSP90在核糖体功能和细胞应激反应中的作用.
主要方法:
- 化学-生物学方法来绘制Hsp90相互作用组的地图.
- 对Hsp90与客户蛋白质内在失序区域 (IDR) 的相互作用进行分析.
- 研究Hsp90在防止蛋白质聚合和调节核糖体启动方面的作用.
主要成果:
- Hsp90与约20%的酵母蛋白质相关.
- Hsp90优先针对客户端蛋白质的内在失序区域 (IDR),使用其三个域.
- Hsp90调节客户端蛋白活性,并防止它们聚合成压力颗粒或P体.
- 破坏Hsp90对核糖体启动的控制会触发热冲击反应.
结论:
- Hsp90在维持本地蛋白质景观的健康和动态方面发挥着至关重要的作用.
- 该研究阐明了Hsp90利用IDRs进行客户端调节和蛋白质组维护的关键机制.
- Hsp90的功能对于细胞平衡至关重要,包括适当的核糖体功能和应激反应.
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