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Cited by 1,613

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Systematic and Quantitative Assessment of the Ubiquitin-Modified Proteome

Open access
Kim, Woong, Bennett, Eric J., Huttlin, Edward L., Guo, Ailan, Li, Jing, Possemato, Anthony, Sowa, Mathew E., Rad, Ramin, Rush, John, Comb, Michael J., Harper, J. Wade, Gygi, Steven P.·2011·Molecular Cell

Abstract

Summary Despite the diverse biological pathways known to be regulated by ubiquitylation, global identification of substrates that are targeted for ubiquitylation has remained a challenge. To globally characterize the ubiquitin-modified proteome (ubiquitinome), we utilized a monoclonal antibody that recognizes diglycine (diGly) containing isopeptides following trypsin digestion. We identify ~19,000 diGly modified lysine residues within ~ 5000 proteins. Using quantitative proteomics we monitored temporal changes in diGly site abundance in response to both proteasomal and translational inhibition indicating both a dependence of on-going translation to observe alterations in site abundance and distinct dynamics of individual modified lysines in response to proteasome inhibition. Further, we demonstrate that quantitative diGly proteomics can be utilized to identify substrates for cullin-RING ubiquitin ligases. Interrogation of the ubiquitinome allows for not only a quantitative assessment of alterations in protein homeostasis fidelity, but also identification of substrates for individual ubiquitin pathway enzymes.

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Metadata

Authors
Kim, W., Bennett, E. J., Huttlin, E. L., Guo, A., Li, J., Possemato, A., Sowa, M. E., Rad, R., Rush, J., Comb, M. J., Harper, J. W., & Gygi, S. P.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2011-10
Volume
44
Issue
2
Pages
325-340
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2143538182
Cited by
1,613
References
3
FWCI
45.14
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Systematic and Quantitative Assessment of the Ubiquitin-Modified Proteome. https://app.cochat.ai/papers/10.1016/j.molcel.2011.08.025
The paper
Kim, W., Bennett, E. J., Huttlin, E. L., Guo, A., Li, J., Possemato, A., Sowa, M. E., Rad, R., Rush, J., Comb, M. J., Harper, J. W., & Gygi, S. P. (2011). Systematic and Quantitative Assessment of the Ubiquitin-Modified Proteome. Molecular Cell. https://doi.org/10.1016/j.molcel.2011.08.025

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.