基于蛋白质基质的定量查揭示了由deubiquitinase Ubp7调节的环素稳定性
Yonghong Wang1,2, Qiuyan Lan2, Xinyu Cheng3
1Department of Biomedicine, School of Medicine, Guizhou University, Guiyang 550025, China.
Journal of proteome research
|June 21, 2023
概括
与传统的蛋白质组学相比,ubiquitininomics定量分析提供了一种更有效的方法来识别无处不在的基质. 这种方法揭示了新的基质,如环素A,由Ubp7调节,影响细胞过程.
科学领域:
- 生物化学和分子生物学
- 蛋白质组学和翻译后的修改
背景情况:
- 定量蛋白质组学对于识别无处不在的基质和理解无处不在的细胞作用至关重要.
- 对酶基质的蛋白质组范围和泛基因组集中查之间的直接比较仍未得到充分研究.
研究的目的:
- 量化比较基质选的效率和有效性,使用整个蛋白质组学与无处不在的选器.
- 为了评估酵母二基化酶Ubp7作为这个比较的模型系统.
主要方法:
- 采用定量蛋白质学和无处不在的方法来选酵母中的Ubp7基质.
- 通过ubiquitinomics识别的选定候选蛋白质进行进一步验证.
- 研究了选择基质的泛化状态和调节,例如环素A (Cpr1).
主要成果:
- 乌比基因组学发现了112个潜在的乌比基因基质,远远超过了整个蛋白质组查发现的27个调节基质.
- 环素A (Cpr1) 被蛋白质查遗漏,被通过ubiquitinomics识别为Ubp7调节的基质.
- 发现Cpr1具有由Ubp7调节的K48连接的泛素链,可能会影响其恒常性和对环素 (CsA) 的敏感性.
结论:
- 与标准蛋白质组方法相比,ubiquitinomics提供了一种更有效和更全面的策略来识别与标准蛋白质组方法相比,ubiquitinated基质.
- 这项研究强调了Ubp7在调节Cpr1无化中的作用,这表明它对细胞平衡和药物敏感性有影响.
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