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Journal Article
Review
How to control an intracellular proteolytic system: Coordinated regulatory switches in the mycobacterial Pup-proteasome system.
Biochimica et Biophysica Acta. Molecular Cell Research 2017 December
Intracellular proteolysis is critical for the proper functioning of all cells, owing to its involvement in a wide range of processes. Because of the destructive nature of protein degradation, intracellular proteolysis is restricted by control mechanisms at almost every step of the proteolytic process. Understanding the coordination of such mechanisms is a challenging task, especially in systems as complex as the eukaryotic ubiquitin-proteasome system (UPS). In comparison, the bacterial analog of the UPS, the Pup-proteasome system (PPS) is much simpler and, therefore, allows for insight into the control of a proteolytic system. This review integrates available information to present a coherent picture of what is known of PPS regulatory switches and describes how these switches act in concert to enforce regulation at the system level. Finally, open questions regarding PPS regulation are discussed, providing readers with a sense of what lies ahead in the field.
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