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Control of Nuclear Activities by Substrate-Selective and Protein-Group SUMOylation

MPG-Autoren
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Jentsch,  Stefan
Jentsch, Stefan / Molecular Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Psakhye,  Ivan
Jentsch, Stefan / Molecular Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Zitation

Jentsch, S., & Psakhye, I. (2013). Control of Nuclear Activities by Substrate-Selective and Protein-Group SUMOylation. ANNUAL REVIEW OF GENETICS, 47, 167-186. doi:10.1146/annurev-genet-111212-133453.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0015-7AF7-8
Zusammenfassung
Reversible modification of proteins by SUMO (small ubiquitin-like modifier) affects a large number of cellular processes. In striking contrast to the related ubiquitin pathway, only a few enzymes participate in the SUMO system, although this pathway has numerous substrates as well. Emerging evidence suggests that SUMOylation frequently targets entire groups of physically interacting proteins rather than individual proteins. Protein-group SUMOylation appears to be triggered by recruitment of SUMO ligases to preassembled protein complexes. Because SUMOylation typically affects groups of proteins that bear SUMO-interaction motifs (SIMs), protein-group SUMOylation may foster physical interactions between proteins through multiple SUMO-SIM interactions. Individual SUMO modifications may act redundantly or additively, yet they may mediate dedicated functions as well. In this review, we focus on the unorthodox principles of this pathway and give examples for SUMO-controlled nuclear activities. We propose that collective SUMOylation is typical for nuclear assemblies and argue that SUMO serves as a distinguishing mark for functionally engaged protein fractions.