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使用高 afinity Ubiquitin 结合域来检测和净化 Ubiquitinated 基质及其相互作用蛋白

Nitu Saha¹, Mengwen Zhang¹, Mark Hochstrasser¹

¹Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.

|September 15, 2025

概括

研究人员现在可以使用OtUBD亲和树脂轻松丰富无处不在的蛋白质. 这种方法有效地从细胞溶解物中分离出单和多基化蛋白质,以便进一步研究.

科学领域:

生物化学生物化学
分子生物学分子生物学
蛋白质组学是指蛋白质组学.

背景情况:

乌比基因化是一种关键的翻译后修饰,它调节了许多细胞过程.
研究全域基因组和全域基因相互作用组需要对全域基因蛋白进行高效的丰富方法.

研究的目的:

描述使用OtUBD亲和树脂从细胞溶解物中丰富泛胺蛋白的协议.
为了能够区分共价性无化蛋白和它们的相互作用伙伴.

主要方法:

使用来自*Orientia tsutsugamushi*的OtUBD树脂进行亲和丰富.
使用不同的缓冲配方进行选择性丰富 (原生与非天然化条件).
与液体染色学-并联质谱学 (LC-MS/MS) 进行下游分析的整合.

主要成果:

OtUBD树脂有效地从原始细胞溶解物中丰富单和多基化蛋白质.
该协议允许对共价性无化蛋白的特定隔离,将其与关联蛋白分开.
在免疫阻塞,差异蛋白质组学和UbiCREST中成功应用.

结论:

OtUBD协议为研究无处不在的生物学的研究提供了一种多功能且经济的工具.
它可以对全域因子和全域因子相互作用组进行全面的分析.
该协议可适应各种生物样本和下游应用.

关键词:

关联性净化净化方法东方的方向 (Orientia) 是指东方的方向.在 OtUBDDD 里面.蛋白质组学是指蛋白质组学.乌比奎丁是一种存在的药物.

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