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Cited by 534

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Global analysis of lysine ubiquitination by ubiquitin remnant immunoaffinity profiling

Open access
Xu, Guoqiang, Paige, Jeremy S, Jaffrey, Samie R·2010·Nature Biotechnology

Abstract

Protein ubiquitination is a post-translational modification (PTM) that regulates various aspects of protein function by different mechanisms. Characterization of ubiquitination has lagged behind that of smaller PTMs, such as phosphorylation, largely because of the difficulty of isolating and identifying peptides derived from the ubiquitinated portion of proteins. To address this issue, we generated a monoclonal antibody that enriches for peptides containing lysine residues modified by diglycine, an adduct left at sites of ubiquitination after trypsin digestion. We use mass spectrometry to identify 374 diglycine-modified lysines on 236 ubiquitinated proteins from HEK293 cells, including 80 proteins containing multiple sites of ubiquitination. Seventy-two percent of these proteins and 92% of the ubiquitination sites do not appear to have been reported previously. Ubiquitin remnant profiling of the multi-ubiquitinated proteins proliferating cell nuclear antigen (PCNA) and tubulin α-1A reveals differential regulation of ubiquitination at specific sites by microtubule inhibitors, demonstrating the effectiveness of our method to characterize the dynamics of lysine ubiquitination.

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Metadata

Authors
Xu, G., Paige, J. S., & Jaffrey, S. R.
Venue
Nature Biotechnology
Published
2010-07-18
Volume
28
Issue
8
Pages
868-873
ISSN
  • 0733-222X (ISSN-L)
  • 1087-0156
  • 1546-1696
OpenAlex
W2061184183
Cited by
534
References
7
FWCI
12.29
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Global analysis of lysine ubiquitination by ubiquitin remnant immunoaffinity profiling. https://app.cochat.ai/papers/10.1038/nbt.1654
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Xu, G., Paige, J. S., & Jaffrey, S. R. (2010). Global analysis of lysine ubiquitination by ubiquitin remnant immunoaffinity profiling. Nature Biotechnology. https://doi.org/10.1038/nbt.1654

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