ArticleInternational journal of molecular sciences2024
The Ubiquitination of Arrestin3 within the Nucleus Triggers the Nuclear Export of Mdm2, Which, in Turn, Mediates the Ubiquitination of GRK2 in the Cytosol.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Structure-Activity Relationships and Ligand-Dependent Arrestin Bias in μ-Opioid Receptor-Mediated ERK Activation.Biomolecules & therapeutics · 2026Article
- Regulation of G protein-coupled receptor kinase 2 and its role in tumors.Journal of translational medicine · 2026Review
- Mdm2-Mediated Ubiquitination Plays a Pivotal Role in Differentiating the Endocytic Roles of GRK2 and Arrestin3.International journal of molecular sciences · 2025Article
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Authors and funding
6 authors.
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Abstract
GRK2 and arrestin3, key players in the functional regulation of G protein-coupled receptors (GPCRs), are ubiquitinated by Mdm2, a nuclear protein. The agonist-induced increase in arrestin3 ubiquitination occurs in the nucleus, underscoring the crucial role of its nuclear translocation in this process. The ubiquitination of arrestin3 occurs in the nucleus, highlighting the pivotal role of its nuclear translocation in this process. In contrast, GRK2 cannot translocate into the nucleus; thus, facilitation of the cytosolic translocation of nuclear Mdm2 is required to ubiquitinate GRK2 in the cytosol. Among the explored cellular components and processes, arrestin, Gβγ, clathrin, and receptor phosphorylation were found to be required for the nuclear import of arrestin3, the ubiquitination of arrestin3 in the nucleus, nuclear export of Mdm2, and the ubiquitination of GRK2 in the cytosol. In conclusion, our findings demonstrate that agonist-induced ubiquitination of arrestin3 in the nucleus is interconnected with cytosolic GRK2 ubiquitination.
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