Deciphering the ubiquitin proteome: Limits and advantages of high throughput global affinity purification-mass spectrometry approaches

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• 作者：C¨¦cile Polge ; S ; rine Uttenweiler-Joseph ; Roza Leulmi ; Anne-Elisabeth Heng ; Odile Burlet-Schiltz ; Didier Attaix ; Daniel Taill ; ier
• 关键词：Ub ; ubiquitin ; E1 ; ubiquitin-activating enzyme ; E2 ; ubiquitin-conjugating enzyme ; E3 ; ubiquitin-protein ligase ; 19S RC ; 19S regulatory complex ; UBD ; Ubiquitin Binding Domain ; UPS ; Ubiquitin Proteasome System ; PTM ; Post Translational Modification ; MS ; mass
• 刊名：The International Journal of Biochemistry and Cell Biology
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：45
• 期：10
• 页码：2136-2146
• 全文大小：1646 K

文摘

Ubiquitination is a posttranslational modification of proteins that involves the covalent attachment of ubiquitin, either as a single moiety or as polymers. This process controls almost every cellular metabolic pathway through a variety of combinations of linkages. Mass spectrometry now allows high throughput approaches for the identification of the thousands of ubiquitinated proteins and of their ubiquitination sites. Despite major technological improvements in mass spectrometry in terms of sensitivity, resolution and acquisition speed, the use of efficient purification methods of ubiquitinated proteins prior to mass spectrometry analysis is critical to achieve an efficient characterization of the ubiquitome. This critical step is achieved using different approaches that possess advantages and pitfalls. Here, we discuss the limits that can be encountered when deciphering the ubiquitome.

This article is part of a Directed Issue entitled: Molecular basis of muscle wasting.