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Neddylation is an ubiquitin-like modification of proteins that affects the activity, stability and protein-protein interaction of its substrates. Apart from its role as a promoter for Cullin ring E3 ligase to positively regulate the ubiquitylation process, other functional studies about neddylation are still lacking. In this study, we developed a system to explore the impact of neddylation on changes in the subcellular localization of proteins at the omics level. By applying a method combining subcellular protein extraction and immunoprecipitation-mass spectrometry (IP-MS), 81 proteins with a tendency to shuttle between the cytoplasm and nucleus due to different neddylation levels were obtained. Among the 81 candidates, transforming growth factor-β (TGF-β)-activated kinase 1 (TAK1) and growth arrest and DNA damage protein 45a (Gadd45a) were confirmed as novel substrates of Nedd8, and neddylation promotes TAK1 nuclear import as well as Gadd45a nuclear export. Copyright © 2020 Elsevier Inc. All rights reserved.


Shaohua Li, Wei Fang, Yu Cui, Huisen Shi, Jun Chen, Lei Li, Lingqiang Zhang, Xueli Zhang. Neddylation promotes protein translocation between the cytoplasm and nucleus. Biochemical and biophysical research communications. 2020 Sep 03;529(4):991-997

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PMID: 32819610

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