A modular toolbox to generate complex polymeric ubiquitin architectures using orthogonal sortase enzymes.
Nat. Commun. 12:6515 (2021)
The post-translational modification of proteins with ubiquitin (Ub) and Ub-like modifiers (Ubls) represents one of the most important regulators in eukaryotic biology. Polymeric Ub/Ubl chains of distinct topologies control the activity, stability, interaction and localization of almost all cellular proteins and elicit a variety of biological outputs. Our ability to characterize the roles of distinct Ub/Ubl topologies and to identify enzymes and receptors that create, recognize and remove these modifications is however hampered by the difficulty to prepare them. Here we introduce a modular toolbox (Ubl-tools) that allows the stepwise assembly of Ub/Ubl chains in a flexible and user-defined manner facilitated by orthogonal sortase enzymes. We demonstrate the universality and applicability of Ubl-tools by generating distinctly linked Ub/Ubl hybrid chains, and investigate their role in DNA damage repair. Importantly, Ubl-tools guarantees straightforward access to target proteins, site-specifically modified with distinct homo- and heterotypic (including branched) Ub chains, providing a powerful approach for studying the functional impact of these complex modifications on cellular processes.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Polyubiquitin Chains; Chemical-synthesis; E3 Ligase; Sumo; Recognition; Proteins; Binding; Rnf4; Specificity; Ubiquitylation
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Language
english
Publication Year
2021
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HGF-reported in Year
2021
ISSN (print) / ISBN
2041-1723
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2041-1723
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Volume: 12,
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Article Number: 6515
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Nature Publishing Group
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London
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Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-503000-001
Grants
'Deutsche Forschungsgemeinschaft (DFG)'
Horizon 2020 Framework Programme
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Erfassungsdatum
2021-12-03